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The price variance one sees in the United States is huge. It is not just that price of “organic” groceries can vary up to five times. Even, something as standardized as coke would be sold in a restaurant for 5-10 times more than the grocery store next door. The same goes for non-perishables like clothes where almost all of them, despite being manufactured in the same set of factories can have a huge price range. Sometimes, even the quality is identical.

While touring United States, I ended up in Tennessee. There isn’t a lot to do in Tennessee, especially, during the winters that I visited. So, here are a few small ideas for a day trip. I would recommend starting the day with Rednor Lake State Park Check out The Parthenon. It is a full-scale replica of The Parthenon in Athens, Greece. I would recommend combining your trip with a visit to the city of Birmingham in Alabama and the city of Louisville located in Kentucky....

Javascript isn’t a language. It is just a specification. Well, that’s true for many other languages like Python and Java. However, most languages have just one de facto implementation. For example, CPython for Python. Java has two major ones - Oracle’s JDK and Google’s Android Java. That’s not true for Javascript though.

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....