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Alabama is a flyover state with historic connections to the civil rights movement of the United States. I spent a day in Birmingham, Alabama and here’s what I would recommend visiting. Start your day with Birmingham Civil Right Institute which talks about the race relations and the civil rights movements for the Black citizens. I would recommend spending an hour or two here. From here, visit Sloss Furances, a historic landmark around industrialization of the United States....

There are two major ways to make money on consumer Internet - subscription or ads. Also, unlike enterprise-world, usage-based subscription is hard and confusing for consumers. So, we end up with 10$ a month all-you-can-consume buffet or we end up with ads. Now, like it or not, not all users are created equal. Some are more valuable than others. And these valuable users indirectly pay more than the users with less spending power....

I crawled through the 2 by 2 feet hole. I checked the map again. If the map is right then in about 30 ft, this passage should open into a big enough chamber for me to walk out of this aptly named Labyrinth cave. My elbows were bruised. So were my knees. And then a small stalactite scratched my forehead. That’s when time stopped for me. I decided to lie down. 100s of small thorny stones were pinching me. I was calm. I looked around. A video feed of this would have been claustrophobic for the viewers but I felt nothing. At least not till my forehead got scratched.

Why does Punjab produce so many singers? Even from the nearby Haryana, New Delhi, or Uttar Pradesh, the best singers usually sing in Punjabi. So, why are so many good singers Punjabi speaking? Well, there is an answer. A perfect pitch is the ability to discern sounds that are close (within 6%) in frequencies. Having a more perfect pitch makes you better at singing. Learning a tonal language makes you better at perfect pitch....

Mt. Fuji is a tough but gorgeous hike. It is much shorter than Grand Canyon or Mt. Whitney and can be done on a day trip.

Bengaluru-based Postman, a API management product, has raised a total of $433 million valuing it at ~$5.6B. Its revenue was $171M in 2023. As a comparison, Rubrik with ~$850M ARR is valued at $6B or about 7 times its revenue. The same metric would put Postman’s valuation at $1.2B. I would argue further that Postman has much lower stickiness and will face higher churn and hence, the revenue multiple would be lower for Postman....

This is a story of a messaging app used by billions of users. The app followed an extremely strong model of privacy. The app never persisted the user’s data on the servers. All the communication is end-to-end encrypted. A lot of users of this app, especially, on Android would regularly uninstall and reinstall the app. Now, to prevent these users from losing messages, the messages were backed up to the user’s SD card....

One up on Wall Street by Peter Lynch is an impressive book about fundamental analysis for stock picking. Following is my terse summary of the same. Emphasis on Fundamental Analysis Look around for companies that are performing well and invest in them before Wall Street institutional investors pick them In the long run, common stocks give the best rate of returns Only basic math is needed to analyze and pick stocks “Don’t gamble, invest your savings to buy good stocks and hold them till they go up and then sell them....

Google Domains A year back, I had to migrate my domain after Google decided to shut down Google Domains. I had to, not only, painfully setup multiple side-projects sub-domain mappings again on a new domain registrar but also re-verify my domain and re-create those mappings on Google Cloud Run. Google Container Registry Google Container Registry is shutting down in 2025. It has been replaced with a new project called Artifact Registry....

On my way from the Prague airport to the city of Prague, I sat on a bus next to a man wearing a suit and tie. “Here for business?”, I asked. “European Space Agency meeting”, he replied. Those were the days of Brexit, so, I had to ask, “What’s the language of ESA now?”.