All posts by Abhishek Nagekar

Recover the cost of a BVG ticket via the USB charging port inside the bus

So I was merrily riding a bus yesterday on my way to Potsdamer Platz for a Dosa lunch when I noticed this:

Image of a usb port inside of the buses in Berlin

And a couple of thoughts hit me: What’s up with the piss stains? 🤷

And something I could actually answer: How long would I need to use this USB port to make up for the €3.20 that I paid for this ticket.

Now, a day later, I have a calm Sunday morning to ponder all of life’s most urgent questions so let’s get back to the thought from yesterday.

Power draw from a USB port

The best way to know exactly how much power I can draw from that port would have been to test it.

The next best thing is to try and guess based on some indicators. From the color of the port, it is safe to conclude it is a USB 2.0 port, and not a USB 3.0 port. From Wikipedia, we see that a USB 2.0 port intended for high power devices allows for a current draw of a minimum of 0.5 amps. The voltage is also standardized to 5 volts.

Amperes times Voltage gives us the power output of the port, which is 0.5 amps x 5 volts which is 2.5 watts (again, at a minimum).

Measuring power consumption

2.5 watts is the power that can be drawn from the port. To calculate how much energy can be consumed over a given time period, we need to simply multiple the watt number by the time number. Typically, it is measured in watt-hours.

My electricity company bills me for the kilowatt-hours I consume. If I use my TV that’s rated at 100 watts for 10 hours, it will be billed as 1000Wh, or 1kWh of energy consumption.

Price of electricity in my area

Electricity does not cost the same everywhere, and not even in the same area. Even the same provider might use different prices depending on the time of consumption and a whole list of other factors.

Looking at Vattenfall’s website (an electricity provider here in Berlin), I can see prices range between 25.07 cents / kWh and 33.37 cents / kWh. To make it easy for calculations, I’m going to go with 30 cents / kWh (all € cents).

How much electricity can I buy for the cost of a BVG ticket?

For €3.20, the price of a single BVG ticket at the time of writing, I can consume (3.20 / 0.30) kWh, which is 10.667 kWh (or 10,667 Wh) of energy with my current electricity provide.

How long do I need to use the USB port to cover the cost of the ticket?

To find the time duration in which our 2.5W port will output 10,667Wh of energy, we simply need to divide the target consumption number by our consumption rate:

10,667 (Wh) / 2.5 (W) = 4,266.8 hours (the Watt unit nicely cancels out giving us the number of hours)

Which is roughly 177.8 days, or just under 6 months.

This time can roughly be cut by half if BVG changes the USB ports to 3.0 guaranteeing a minimum current draw of 900mA but I’m not holding my breath.

How much will a ticket effectively cost if I make full use of my ticket’s validity to charge a device?

Now of course being in a bus for 6 months is going to cost more money for season ticket and I might never recover my full ticket.

But what about the journey that I’ve already paid for? A BVG single ticket is valid for 2 hours. If I make 100% use of the time a ticket is valid for to charge my device, what’s the effective cost of my ticket?

At a minimum of 2.5W for 2 hours, I’ll consume at least 5Wh. At 30 cents / kWh, that’s 0.15 cents worth of electricity.

That’s 0.15 cents or €0.0015 that I can immediately recover from my ticket price, effectively making my single journey BVG ticket cost not €3.20, but a jaw dropping €3.1985 😎🫡

In conclusion

So there you have it. Go grab your 0.047% discount on BVG tickets! Subscribe for more financial tips. Thank you for reading!

Want to write more

Back in the day, I’d try to publish an article every month on my blog. It was difficult, but I’d still manage it for most part. I just looked at my last published article, which was in March, and the plethora or drafts sitting there, receiving little to no love.

Whenever I come across blogs with last published articles from years ago, I wondered what might’ve happened. Why (and how) do some people manage to keep publishing long form content after all these years, while others have given up on blogs. Some of them have done so in favour of more short form content that has taken over the web in the last decade or so. And of course, there’s a whole spectrum in between, where I see myself right now.

I came across this idea of perceived cost of doing things, depending on how much time it takes. For example, if I have an article that took my 2 months to finalise (and thus get satisfaction from), my brain might associate the cost of writing a long form article to be 2 months, thus discouraging me from picking up my computer to write again. If the actual satisfaction is derived from people finding my writing useful, then the gratification is delayed by several months or even years.

Creating a meme for Instagram, on the other hand, gets me gratification within minutes. Of course I know how these things work. But possession of a piece of knowledge isn’t very useful if it cannot be applied in a meaningful way.

Again, there’s nothing inherently wrong about creating short form content, and there’s nothing superior about people who create long form content. Personally, as long as I retain my ability to do either when I wish, I’d be pretty happy. I want to make memes and make my friends laugh, and keep publishing valuable content on the internet.

And that’s why I started writing in the morning today as I was on my way to meet some friends: To publish it immediately and remove some of the cost burden that has creeped into my head around publishing on my blog. Hopefully I can write more soon.

Thank you for reading!

Focusing on the beauty in the world with a camera

In late 2021, my friend Ed handed me his Canon 7D for me to try my hands at photography. I already had an itch to get into it but didn’t have the “gear”, or so I told myself. The camera came without a lens or SD card so I rode my bike to the Saturn store at Alexanderplatz and got myself a Nifty-Fifty; a Canon 50mm f1.8 lens. It is still to this day the most fun-to-shoot-with lens I own.

I’ve taken thousands of pictures since then. What’s changed between owning a smartphone (that features brilliant cameras) and owning a dedicated camera is that when I have a dedicated camera on me, I go looking for something interesting, something beautiful, something funny, something new. It is deliberate and intentional.

The world is full of patterns, symmetry, life, history, people, clues, colors, shades. There’s just so much that sparks curiosity. Would I find it interesting even if I wasn’t trying to take a picture? Probably. The camera on me reminds me frequently that I’m trying to focus on the beauty in the world that I can sometimes forget to notice.

Having a camera just gives me an excuse to step out, wander around, stare at walls, look at people and dogs and cats and insects and flowers.

The best camera is the one you have you on

I’ve read this quote at a bunch of places, and that’s why I got a paid pro camera app for my iPhone last year. A smartphone is perfect as a camera. It is always there, always charged and it is getting better at a rate faster than any dedicated camera system can imagine. It is getting to the point where smartphones are taking pictures that isn’t reality but what the phone thinks you wanted to shoot, but that’s a different topic.

But smartphones don’t just take photos. They have our social and work life on them, and they’re always connected. I struggle to stay intentional about anything with a smartphone around me, probably because it does so many things. And that constant state of being distracted by nothing in particular is quite exhausting.

What I wanted, for lack of a better excuse, was a camera that was just a camera. And that’s why I decided to get my self a relatively cheap point and shoot camera from Sony.

With the little Sony, it is as fun to take pictures with as my DSLR, but at the same time it is more subtle and it fits in my other pocket. It is like the best of both worlds! Of course, it isn’t without its drawbacks. It needs to be charged separately from the smartphone, the photos are worse than the DSLR and so on. But it is always with me and it forces me to be intentional with my hobby which makes it all worth it.

Photography as a memories generation tool

I remember watching this video where that idea of routine making time fly faster was exposed to me. I watched it many years ago and thought it was very true, although I had not had any real routine back then. Today, I kinda still think it holds true.

Photos are a good way to get back some memories, especially when they’re taken intentionally. I read somewhere that good photographers are intentional with their shots. They try to remember what made them take a picture. There’s a story associated with a picture in their heads that they can tell you. It isn’t about the camera or the lens or any of the technicality. Just the moment captured on film.

I’m trying to copy this–to think why I’m taking a picture before clicking the shutter button so that when I’m looking at the pictures later, I can really remember the scene very vividly; the scene in the frame, sure, but just as importantly, the scene outside of the frame–the sun’s warmth or the cold wind and rain on my skin, the sounds and my thoughts, and also did I decide to take picture of this very thing of all the other things. Like a wormhole back to that moment in time. That somehow helps make memories easier to go back to and make the time spent doing event the mundane-est of things count.

In closing

That was a bit all over the place, so apologies if you kept searching for a topic in this article and failed to find it. I just wanted to get it out. On a different note, I want to document my photographs better, but I’ve not found a good way to do so. Instagram isn’t ideal, and while Flickr might work, I find myself questioning how long will it be around. In the end, I think hosting an image gallery plugin on WordPress with my showcase-worthy photos might be a good idea. We shall see.

Thank you for reading!

10,000 Days Old Today!

I don’t know why I started keeping track of my age in number of days, but I’m willing to bet it was in anticipation of this very day. I’ve not tracked it for long though. Just a couple of months really.

If you’re curious when you’ll turn or you turned 10k days old, it comes around when we’re 27 years, 4 months and 16 days old. 20k days is, naturally, when we’re 54 years and 8 months which feels much more further away than it should. What does that tell us about time?

The day itself is pretty ordinary. I’ll get myself a little cake to celebrate, but I’d have probably done that in any case. It is raining the whole day today. Not sure what’s up with that. I wanted to go to Conrad to get a USB-A to USB-B cable, and just window shop, but doesn’t look like I’ll be doing that given the weather situation.

I don’t have much to write about here. Just wanted to make this milestone post. Having said that, I’ll link to some of my poorly written past articles talking about time below.

My birthdays

Turning 20 – Birthday Week

Turning 24 – Twenty-four

Turning 27 – Twenty-seven 🎂

My blog’s birthdays

1st anniversary of blog

4th anniversary of blog

6th anniversary of blog

Year reviews

2015 year review

2018 year review

2019 year review

University

4/8 Engineer

6/8 Engineer

7/8 Engineer

8/8 Engineer

Misc

Time and measuring time precisely with C++

When will we become engineers?

Be easy on yourself

The best time of your life is right now

In closing

Thank you for reading!

Let’s talk about Radio Clocks

After arriving in Berlin in January of 2019, I treated myself to a Casio F-91W. It was my first (non-essential) purchase in Germany, and for less than 10 Euros, it was a steal. Plus, a colleague of mine wore it and it looked cool. Easy decision!

Little did I know that this watch had a cult following on the internet. People collected all versions and variants of it and wore it with pride. I got pulled into the hype surrounding the F-91W and eventually more of the Casio retro digital watches.

It was an easy “hobby” to pursue given it is basically just buying more stuff. Nevertheless, it isn’t all that bad given how cheap these retro watches are. It is all relative of course, but given I’m also into photography, acquiring Casio watches is easier on my wallet.

Today, I own a couple more and I’m low-key proud of my collection.

Learning about Radio Clocks

Like with anything I get obsessed with, I spent a lot of time reading and watching YouTube videos about Casios. At some point I stumbled upon the Casio Wave-Ceptor series of watches. It struck me as something different: This fairly low tech wrist watch could set and correct its time automatically!

“But wait, it isn’t a smart watch” I thought. How does it do that?

That sent me down the rabbit hole which I’m still on my way down right now. Turns out, the watch can receive signals transmitted by a time signal transmitter and correct its local time.

In Germany, there’s Mainflingen longwave transmitter transmitting DCF77 time signal. The carrier signal has a 77.5 kHz frequency and the time signal is generated from the local atomic clock which syncs with the main atomic clock in Braunschweig. It is operated by the Physikalisch-Technische Bundesanstalt which also hosts four public NTP servers:


ptbtime1.ptb.de

ptbtime2.ptb.de

ptbtime3.ptb.de

ptbtime4.ptb.de

Querying the time using the commandline utility sntp and watching the network activity in Wireshark gives us some interesting data.

Wireshark

What’s next?

I’ve ordered a cheap radio receiver to play around with the radio time signal. On the watch side, I’ll look for cheap used radio Casio watches on the local Ebay here and try to acquire. I hope this new obsession ends up teaching me a thing or three about analog signals.

That is it for this side-quest post. Thank you for reading!

Letter To My 18 Year Old Self

I have a love-hate relationship with articles such as this. On one hand, the thought of going back in time and changing certain decisions is always fascinating, and documenting some of those thoughts into text that I can keep coming back is alluring. What is also appealing is to have this documented as a reference for my future self who’d probably (read: most likely) also want to write back to his 18 year old (or 27 year old self 🤷‍♂️, who knows).

But on the other hand, articles with titles such as this are so cliche that they don’t feel sincere and make me cringe. What’s even the point of publishing it? Don’t I believe that my current state defines the combined success or failure of all my past decisions and events in my life? If I’m happy with the state of affairs in my life right now, doesn’t that mean everything in the past kinda worked out in the end?

I don’t know. My current philosophy doesn’t allow for an article like this one, for it doesn’t make any sense to wish for the possibility of a different present when I have the certainty of my current present, which I believe I’m okay with. But then, why stop myself from writing down all the lessons that I’ve learned ever since I turned 18. I guess I could post that under a less cringey title along the lines of “Generic useful lessons in life”.

But then, useful to whom? When? Would I like it to be handed over to me when I was 5? 10?

Exactly. We’ll move in circles here and never get anywhere. That’s probably the reason this article has been a draft for a year or more. But I think I’ll have to get it out of my head first, and deal with the above thought later. Having cleared that, let’s get started * snaps finger *

The satisfaction of reaching a goal is so much smaller than the satisfaction of doing something you love, so love the process for that’s where most of the satisfaction lies

Quotes that urge us to enjoy the climb more than the peak, the journey more than the destination or something along those lines are dime a dozen. Being a quote-collector, I’ve known them forever.

But it is only after repeatedly going through the same journey over and over again — desiring something, working my way towards it and then eventually getting it — have I learned that the joy of having achieved something is minuscule compared to the joy I got along the way doing the thing I loved.

Happiness derived from external sources is very limited, and once the basics are covered, very superficial

Very similar to the previous point, but with an important distinction. Time and again, something has repeated:

  • I’ve desired something materialistic
  • Spent countless hours reading about it and contemplating about the joys its possession will bring me
  • Eventually acquiring it
  • Only to have the joy feel underwhelming after a matter of minutes of doing it

And then recently I came across this quote

“Traveling is a fool’s paradise. Our first journeys discover to us the indifference of places. At home I dream that at Naples, at Rome, I can be intoxicated with beauty, and lose my sadness. I pack my trunk, embrace my friends, embark on the sea, and at last wake up in Naples, and there beside me is the stern fact, the sad self, unrelenting, identical, that I fled from. I seek the Vatican, and the palaces. I affect to be intoxicated with sights and suggestions, but I am not intoxicated. My giant goes with me wherever I go.”

Ralph Waldo Emerson wrote in his 1841 essay, “Self-Reliance.”

I think what Emerson is trying to say is that trying to fix something that’s an issue on the inside by changing something on the outside seldom, if ever, works. But if you’ve ever spent hours browsing Amazon out of boredom thinking the new iPhone or Sony’s new mirrorless camera will make you content and solve all of your life problems, and were lucky to actually be able to buy it, you’ll know that the satisfaction was very short lived and things go back to being exactly the way they were before.

We also vastly overestimate how much joy we’d get from achieving our material goals. Getting to a higher salary, or a dream job, or the latest iPhone; I realized how little joy the outcome eventually brought compared to the misery that the desire for it brought.

Friends and family are what keep you going even on the gloomiest days

I arrived in Berlin on a very cold and gloomy day, and the next few weren’t any different. Unable to cope, and having had my luggage misplaced, I was naturally sad after the second day, asking why was I even there.

Just sitting quietly in my bedroom having exactly 0 friends in this new city, I was feeling (what I’d later learn) the seasonal low mood sprinkled over homesickness. Then I got a call from a friend back home. Then my parents called me. And within an hour or so, I was actually happy I was in Berlin, went out for a walk and had some kebab 🥙

Case in point, I learned that my brain is easily tricked into happiness by interacting with people I love and care about. Just a casual chat a day with a friend keeps me in generally good mood. It is like a tonic for my mental health, doubling as first aid when time comes.

Hence, I think it is important to always have people that one can open up with. These people don’t magically appear but have to be invested in over years to cultivate such relationships and that’s something I really value in my life today.

Bad decisions attract bad circumstances which bring a bad state of mind, and a bad state of mind brings more bad decisions. Works just as well with good decisions

Or the snowball effect. Habits, outcomes of decisions and events in our lives, both good or bad, generally start small and they slowly spiral and become greater in magnitude and have a greater influence on our lives.

For this reason, I think it is important to 1. Be mindful of smaller problems that might have the potential to spiral into bigger ones, 2. Have people around you who can point out and alert you of the small cracks developing and 3. Believe that little good habits, however small, will compound with other little good habits and bring much greater good than their perceived insignificance.

Be aware and intentional

David Foster Wallace’s speech titled this is water talks about learning how to think, how to chose what we think about inside our minds irrespective of what’s happening outside of it, to be in control of our thoughts. I’d highly recommend you listen to it.

Like many, I found the speech very educational, and decided to not only be more attentive of my thoughts and the way I think about things, but also be very intentional about my actions. For me, it means to jump out of the default setting and steering the direction in which I mind decides to run with a thought after having passed it through my values filter.

It also means that when something doesn’t work out, it is usually not a sad outcome, but an educational one because I chose this version of reality over the others, and accepted the risks and rewards associated.

In closing

Phew, that was not easy to write. But I’m happy I did. I can already see myself coming back to this article from time to time. I hope you found some value in the text above

Thank you for reading.

Top Reasons To Use Mozilla Firefox 🔥🦊 Right Now – Part 2

Like many of my friends during the late 2000s, I embarked on my internet journey with Firefox. It started with Firefox being the only browser that could reliably resume downloads in the event of a power outage, which were frequent in my part of India, and that was very useful with a slow internet connection that gave me 10KB/s on a good day.

A few years later I learned about free and open source software, and started thinking of the internet as a public resource and a great equalizer of access to knowledge and opportunity. Firefox was a very natural fit in this newly discovered world of mine.

Around 8 years ago, I published top reasons why you should start using Mozilla Firefox right now documenting the various reasons why Firefox should be the browser of choice for anyone who desires a safe, private and customizable web browsing experience.

Since I’m now part of the organization that I’ve so long revered, I thought an update to the original post is appropriate, and started listing some reasons why Firefox is still my browser of choice today.

I am slightly biased towards Firefox, but in my defense that’s hardly ever changed.


Features that enhance your web experience

One of the reasons people love Firefox is its customizability. The functionality can be extended using Addons and for the truly adventurous, Firefox’s UI is customizable using a bit of custom CSS. Given how personal web browsing is and how much time we spend using a browser, a bit of customization can go a long way.

Powerful Adblocking with uBlock Origin

TL;DR from Ghostery

With enforcement of Manifest V3, Google dramatically limits capabilities of browser extensions. It removes access to powerful APIs that allowed us to provide innovation in privacy protection. Being subjected to those constraints, we have to re-invent the way our extensions operate. Intended or not, Manifest V3 takes choice away from users, exposing them to new threats. Manifest V3 is ultimately user hostile.

https://www.ghostery.com/blog/manifest-v3-the-ghostery-perspective

Ads are the de facto way of monetization on the internet, and many creators rely on it for making a living on the internet. However, since there’s so much money to be made through harvesting data for targeting ads, internet ad companies try to “spy” on people across the internet learning more and more about their browsing habits to show them the most relevant ads.

Many people face a dilemma of having to choose between giving back to the content creators they’ve come to love and depend upon, and not being okay with third party companies looking at their browsing habits all over the internet.

Tools like uBlock Origin prevent “cross site tracking” and block ads and other annoyances from loading on webpages saving bandwidth and energy, and enabling a fast and pleasant web experience.

uBlock Origin also allows enabling ads on certain websites, which is something we should definitely do to support digital creators we rely upon for news, knowledge and entertainment.

Note that online advertising can be both effective and useful, without being creepy as this page from DuckDuckGo describes.

Further reading:

Picture-in-Picture

Picture-in-picture mode detaches the currently playing video on many video streaming websites like YouTube, enabling you to watch a football game while reading an article on Wikipedia all in a resizable little window that can be moved around.

Multi-Account Containers

Want to keep work, social media and finance related websites all separate but don’t want to bother having two browsers or separate web history? Multi-Account containers help you do exactly that.

Now you can browse Facebook in one “container”, access your banking apps on another and keep your work and personal email logged into a third and fourth container. Yes, logged into two Google accounts from the same browser.

None of the websites in one container “see” the websites open in another, either directly or with third party cookie based tracking.

Tree Style Tabs

You’d have to pay me to have me move back to the old way of using browser tabs and you’d fail. They’re that good. Seriously.

Tabs arranged in a “tree” shape

Look maa, no Tabs bar!

Tree Style Tabs give you a quick way to visually see the which tab something came out of, essentially answering the question of “how did I even reach here?” when you are 6 levels down in a Wikipedia rabbit hole about deep sea internet cables or something.

P.S. Annie is one of my favorite creators on the internet. Go follow her page @depthsofwikipedia on Instagram for weird Wikipedia content.


Better privacy controls for all

Because privacy is a fundamental right and most people prefer not having third parties snooping over their shoulders as they browse the internet.

Total Cookie Protection

Firefox rolled out total cookie protection earlier this year which creates separate “cookie jars” for websites preventing cross domain tracking using shared cookies.

Image from Mozilla

Enhanced Tracking Protection & Breach Monitoring

Firefox protects you from malice on the internet. It also does a good job at reporting the protections.

Enhanced Tracking Protection dashboard

Breach monitoring alerts you if your email address was involved in any data leaks across the internet.

Breach Monitor dashboard

Bonus section

This section will have weird things by design.

Custom CSS

As mentioned earlier, Firefox’s UI elements are made with web technologies like CSS. A bit of custom CSS goes a long way into making the Browser look exactly the way you want. A popular workflow is hiding the Tabs bar and relying on Tree Style Tabs for inter-Tab navigation.

Logo 🦊

This is very personal (that is, even more than the rest of this article), but I’m very fond of the Firefox logo. And as we’ve seen in the past, many people feel very strongly about the Fox in the logo so I’m not alone in feeling that way.

Firefox Developer Edition

I use the Firefox Developer Edition as my work browser. It is really good if you work with frontend web technologies like CSS or JavaScript. Debugging CSS or JavaScript on the Developer Edition is a joy, and I was especially impressed at how good it was with Grids.


In closing

If you had asked me 8 years ago why I recommend Firefox, I’d have gone on a long rant about how Firefox is one of the only two major non-Chromium based browsers, and the only one supported by a non-profit that fights to keep the web open and inclusive; That Firefox is built and maintained with the help of thousands of volunteers and open web enthusiasts and so on.

Today I would just say I recommend it because it is a great browser. It is also all of the above if you care, but if all you care about is the best web experience, Firefox will serve you just fine.

Go give the Fox a try! Thank you for reading.

Featured image credits: https://unsplash.com/photos/ZHS3j0_Y_KM

Twenty-seven 🎂

I turned 27 a month ago. I’ve not written a birthday post in a while (last time was turning 24, three years ago) so decided to write something for this one. Not that 27 is a special year or anything (well, I guess it is (un)special in the sense that it only comes once in a lifetime). However I do somehow feel 27 is a round number.

It is hard to explain, but I think I’m at the line that separates an early adult and a full real adult. It’s complicated, and I feel like neither to be very honest.

This year was quite exciting, from settling into my new role at CareerFoundry as a web & security engineer, to traveling around a bit, to getting my dream flat in the NeukĂślln district of Berlin (only to lose it six months later, but hey, not everything has to work out :), to getting my dream job at Mozilla, it has been a really happening year.

I’m really looking forward to this year. New job, new apartment, new part of the city, new technologies to learn and master. So much to be excited about. I decided to write more starting on my birthday, and I’ve been seeing good progress in the last month and a half since then. I’ll document my note-taking habit in an article about Obsidian soon.

My hope for the next one year is to get some stability into my life which got a bit rough in H2. Also hope to do well at work and life in general, but we’ll see that.

Currently I’m into this game called Life is Strange and have been listening to sound tracks from it. I play chess around once or twice per day, and sometimes paint.

Work takes up most of my time, but that’s expected and I’m really enjoying the new learnings coming my way. Overall, life’s good. I’ll go into more detail regarding some of the things I’m up to in separate articles.

Thank you for reading!

office space at evening time with some desks and postit notes

6 Lessons learned during my time at CareerFoundry

I started working at CareerFoundry (“CF”) in January 2019. Ever since then, I’ve changed in many ways. Change is inevitable and we have very limited control over it. In fact, I think that that only tiny bit of control we have over it is the kind of change we’d like to see in ourselves.

One way to dictate positive change is by being curious about new environments and people, embracing new and often uncomfortable situations with an open mind.

Getting hired at CF carved a way to some of my most cherished memories, meaningful relationships and enabled me to pursue the hobbies and interests I always wanted to pursue and be the person I always wanted to be.

It also brought me to the beautiful city of Berlin that had space for me and my eccentricities.

I’ve met some amazing people at CF — people who’ve guided me, mentored me, praised me and then schooled me when I needed it. People who’ve shaped the person you see in me, the person I see in myself.

Inspiration for this article

The inspiration for this article came from a thought I had.

I was visualising our old office at KĂśpenicker Straße and thinking of my first day. I walked from Heinrich-Heine-Straße U-Bahn all nervous, not sure how I’ll feel about working in a new country with new people. I was scared.

I started imagining my current self; the one who has worked at CF for nearly 4 years, on my last day walking down the stairway, meeting my younger self walking up the stairway on his first day.

The young me asks if I have any tips for him that’d help his CF journey.

This is the article I’d send him.

Lesson #1 – Gratitude makes everything better, so does kindness

I admit that it was strange standing in a circle hearing everyone thank one another in my first week at CF. But I got used to it. Some time later I understood the idea itself. 

In a world of ever-increasing needs and wants, gratitude makes us look back at what we already have and feel good about it. The Friday gratitude forced us to look back and remember something good that someone did that helped us in some way. Not just remember, but also announce it.

It is like social-engineering happiness into people, pushing them to look at the beauty in the world. With practice, I got more and more comfortable thanking people and telling them I appreciate them.

Kindness is another quality that I found in abundance during my time at CF. The lengths people went to—to support one another, to assume the best of intentions and to help each other grow—was incredible. I’m a recipient of much of that kindness myself. 

Like with gossiping and complaining, gratitude and kindness are just habits. The more we practice them, the easier it becomes to do it the next time. 

The more we are exposed to any of them, the more we reciprocate it to others. Hence it becomes easier to find people who exhibit the same. It is a beautiful self-sustaining cycle.

Lesson #2 – Growth mindset, or the idea of unlocking new skills with practice

Growth mindset is simply believing that many skills can be learned and improved upon by regular practice and timely feedback as opposed to being born with an innate capacity to do them.

The first time I heard about growth mindset was through one of Martin’s Monday morning speeches. It made sense, but it was only after applying it to many of the skills I wanted to pick up that I understood how powerful a simple change to a way of thinking can be.

I got into many hobbies after that, learned fun skills and gained many friends due to the hobbies. It changed my way of looking at everything and made me more curious.

I’ve gamified the whole experience of knowing absolutely nothing about something, then learning more and more about it, practising, getting feedback and improving, and then magically being able to do it — something that I’d have deemed impossible a short while ago.

Lesson #3 – Good people with good intentions are the overwhelming majority

There was a rant post on Reddit about how Berlin is changing for the worse, and there was this following reply to that post. I thought it was really well written.

You leave a megaphone in a public space, and mostly as**oles pick it up to yell thinly veiled hatred in it. No one cares, except for the other assholes in the megaphone line, who cheer for the bile and can’t wait to be cheered in return. But then, when I picked the megaphone and asked for help, I found help. And when I picked up the megaphone and offered some, I found people to help. The regular people are here. They just aren’t ranting or cheering the rants.

– reddit r/berlin

It isn’t news to anyone that negativity spreads much faster than positivity, and social media only amplifies that. As a result of this, it is very easy to be cynical of everything and everyone.

What I’ve learned at CF is that most people are just like me. 

  • They will do good if given a chance. 
  • They’ll help if they can. 
  • They’ll get out of the way if told they or their actions are causing hurt

One of Martin’s Monday morning speeches was about assuming the best of intentions. I thought it was appropriate as most people have good intentions most of the time, so it makes a lot of sense to have that as our default stance.

Lesson #4 – Rules can be made up to come together with others, do good and spread happiness

Another important lesson I’ve learned at CF goes hand in hand with an amazing video I watched about Optimistic Nihilism from this youtube channel called Kurzgesagt. The premise of the video was that if the universe doesn’t have any purpose, then we get to dictate its purpose; our purpose.

An extension to that idea is creating arbitrary rules for ourselves that help us do more of what we love. At CF, many people are givers. They love doing something for others. 

So why wait for a special yearly holiday to cook for others? Just make up a couple of things like Soup Kitchen and Breakfast Thursdays to enable anyone who loves cooking for others to do it.

And why wait for Thanksgiving to thank someone when we could just thank them every Friday in our Friday Gratitude.

And why wait to take that new colleague of ours and the rest of the team to the best burger joint when you could just have Burger Fridays every Friday.

Convenient, eh?

Honestly, Burger Fridays is my most missed tradition at CF. I’d have also proposed a Donnerstag Döners but Covid had other plans.

Lesson #5 – Company culture is just the people of CF

Recently I watched this speech titled “This is water” by David Wallace in which Mr. Wallace tells us the importance of being aware of the most obvious things around us.

It made me think of this phrase “company culture” and wonder what it is. When I joined CF, I remember trying to fit into the culture. Before I knew it, I was interviewing people who were seeing me and judging the culture of the company. I went from trying to fit in, to defining what the culture at CF was. All of us did.

I then realised something interesting. Since “CF” itself is a virtual entity that only exists in our shared minds, CF’s culture is just how we perceive the rest of CF. In that sense, each and everyone at CF is playing a part in defining the culture of CF at that moment. When someone joins, they bring something new to the table. When someone leaves, they take something away. 

CF’s culture is as dynamic as the people it is made up of and suddenly, “How will we keep the culture at CF the same?” — a question that gets asked a lot whenever we speak of hiring — automatically turns into “How will we hire the kind of people we’d like representing CF?”, and I think that is a more useful question.

Lesson #6 – There’s more to life than just work

My first day at CF was 14th of January, 2019. I was busy setting up my laptop and various company accounts, and reading some documentation. At around 6.30pm, Megan came to my table and said “that’s enough for the first day — go home now”. I looked around and almost everyone had already left.

This was strange to me. It was still a couple of hours till dinner time. Why not just keep working and go straight to dinner?

You see, I didn’t have leisure time in my vocabulary back then. It was always doing something. Working, eating, sleeping, coding, studying. Something. 

I grew up with a hustle-culture mindset where if I’m not working 10 hours a day and coding in my free time, I’d not consider myself “ambitious” and probably not “make it”. Berlin and CF changed all of that.

All of a sudden, I had at least a couple of hours every day, and two full days of weekend when I wasn’t expected to keep working. I could do something else. But what? 

Anything.

I started pursuing hobbies that weren’t career related or would ever be monetized. I started biking and playing chess, painting and playing music or just sitting by the canal doing absolutely nothing. 

It is nice to not have to constantly think of free time as wasted time, and I have CF and Berlin to thank for this huge change in my way of thinking and living my life.

Thank you, dear friends

I am grateful for everything I’ve learned from the people at CF. It has made me a different and, in my opinion, better version of myself, and I can’t thank you all enough. I’ll pay it forward wherever I end up in life.

All the best – Abhi!

Crossposted from Linkedin

Puzzle Time – Distance To Horizon

A couple of months ago I was on a flight and had a thought: How far is the horizon at this very moment?

I got my notebook and pen out and tried to solve this using only the knowledge I had, since there was no internet anyway. Of course, many assumptions were made as were convenient for the calculation.

I planned on checking my answer once I landed. If you want to attempt it, stop reading here and come back later when you have a solution. Unfortunately for me, I made a little error subtracting between two big numbers and got a completely wrong answer.

Assumptions

I assumed the following

  • Perfect visibility, no degradation due to atmosphere
  • Earth is a perfect sphere with a radius of 6400km
  • Aeroplane flying at an altitude of 10km

Solution

Thanks to the assumptions, the problem reduces to primary school geometry problem and is trivial to solve once visualized clearly on a piece of paper.

Using Pythagoras Theorem we know how to calculate the third side of a right angled triangle give the first two. We also know that a tangent to a circle (the line of sight from an aeroplane) meets the circle in a way that it is perpendicular to the radius drawn from the point of contact.

Combining the two pieces of knowledge, the problem can be trivially arranged as follows

(R + r)² = R² + Dh²

Where

  • R is the radius of the earth (in Kilometers)
  • r is the distance of the aeroplane from the surface of the earth (in Kilometers)
  • Dh is the distance to the horizon

Rearranging, we get

Dh² = (R + r)² – R²

Expanding the (a + b)² equation

Dh² = R² + 2Rr + r² – R²

Dh² = 2Rr + r²

Taking square root on both sides

Dh = √(2Rr + r²)

Substituting the values

Dh = √(2*6400*10 + 10²)

Dh = √(128000 + 100)

Dh = √(128100)

Dh = 357.9

Distance to horizon is about 358 kilometers when the aeroplane is at an altitude of 10 kilometers. Now looking at the map while sitting in a flying aeroplane is a lot more insightful as I can guess which cities I’m looking at outside the window.

That’s it for this little post. Thank you for reading!