This Week I Learned - Week 12 2026

This Week I Learned - 

* ChatGPT is good at generating structured JSON

* LinkedIn is a JavaScript SPA — most pages render content after load.

* Rodney is an AI-powered command-line agent that can automatically navigate LinkedIn & extract professional profile information. You can think of Rodney as an automated scout that uses a "remote control" called CDP (Chrome DevTools Protocol) to navigate LinkedIn for you.

* Rodney uses CDP as a "backdoor" to your open browser, allowing it to "drive" your LinkedIn account like a remote-controlled car to find and save professional data without ever asking for your password.

* uv is a modern, extremely fast Python package and project manager written in Rust. If you’re used to the old-school way of doing things (manually creating virtual environments with venv and installing packages with pip), uv replaces all of that with a single, lightning-fast tool. It is roughly 10x to 100x faster than standard pip.

* As prototypes often are NOT production-ready, it is leading to Vibe Code Fixer and AI Slop Fixer roles.

* When using MiniMax M2.7, keep tasks small and verify correctness, completeness.

* AI is shaping modern warfare. Military spending has risen 37% between 2015 and 2024, as governments pour billions into AI-enabled weapons, cyber warfare systems, satellites and autonomous drones.

* "What makes OpenClaw different from Claude or ChatGPT or Gemini is that it runs locally on your computer. You can give it access to everything that’s there: your files, your email, your calendar, your messages. It operates continuously in the background, building a persistent memory of your preferences and patterns so it can better act on your behalf. The cybersecurity risks are glaring, but there’s a reason millions of people are using it: The more of your life you open to A.I., the more valuable the A.I. becomes...A hallway conversation adds nothing to what your A.I. knows while a Slack conversation in a public channel can add quite a bit." - Ezra Klein

* Music streaming platforms are going beyond providing songs & lyrics. Shazaam rates songs on the following parameters -

1. Melodicness - How much the song possesses a clear and memorable tune that follows well-defined musical patterns. A song high in melodicness generally features clear and memorable instrumental or vocal lines.
2. Acousticness - A measure of how much a song relies on acoustic instruments (eg. piano, guitar, violin, drums, saxophone) instead of electronic or digitally synthesized
3. Valence - The musical positivity or emotional tone conveyed through the song's harmonic and rhythmic components. High valence corresponds to feelings of happiness, excitement, and euphoria while low valence is associated with sadness, anger, or melancholy.
4. Danceability - A combination of factors including tempo stability, rhythmic patterns, and beat emphasis to determine how suitable a song is for dancing. A "danceable" song may feature a consistent tempo, repetitive musical structure, and strong downbeats.
5. Energy - The perceived intensity of a track which may be influenced by tempo, dynamics, and musical compactness. A high energy song may have a driving rhythm and dense instrumentation while a low energy song can be musically sparse and feature slower tempos.
6. BPM (Beats Per Minute) - This is the tempo or speed of the music. It counts how many steady beats occur in 60 seconds.
• Fast (120+ BPM): House, Techno, or upbeat Bollywood dance tracks.
• Slow (60–80 BPM): Ballads or lo-fi tracks.

Shazaam and platforms like Spotify use Acoustic Fingerprinting and signal processing to quantify the "vibe" or mathematical DNA of a song and visualize these parameters though radar charts.

When you "Shazam" a song, the app creates a digital signature of the audio and compares it against a database of millions of tracks.

BPM is the most "objective" number here, but things like Valence and Energy are subjective. An AI might rate a song as "happy" (high valence) because it's in a Major Key, even if the lyrics are actually quite sad. Don't take the "shape" of the song as absolute truth—it's just how the algorithm hears the math of the music.

* The Trimates - Biryute Galdikas, Jane Goodall and Dian Fossey were recruited by Louis Leakey to bring great apes into public consciousness. 

* HDFC Bank Chairman Atanu Chakraborty's abrupt resignation on March 18th due to a power struggle with CEO Sashidhar Jagdishan, stemming from strategic disagreements and governance issues, triggered a sharp selloff in the stock, wiping out nearly $11.5 billion (~Rs 70,000) in market value of HDFC Bank stock. At the heart of the fallout were differing views over how responsibility should be fixed for certain missteps which included client losses linked to high-risk bonds issued by Credit Suisse and regulatory restrictions imposed on HDFC Bank’s Dubai branch. The wording of his resignation letter, referring to practices at the bank not being “in congruence” with his personal values, unsettled investors when it became public. The RBI  stepped  in with an unusual reassurance that there were no concerns regarding the bank’s governance or stability, resigned abruptly .

* Reliance Industries will partner with America First Refining to build the first new U.S. oil refinery in 50 years in Texas.

* Disruptions from the Iran war are increasing prices for plastic bottles, caps, and packaging in India.

* 50% of actively managed equity fund NFOs launched since 2020 failed to beat benchmarks.

* Holiday lists are largely determined administratively based on inputs such as festival dates provided by the India Meteorological Department’s astronomical division.

* Sikhism is the fifth-largest amongst the major world religions, and one of the youngest. Worldwide, there are 25.8 million Sikhs, which makes up 0.39% of the world's population. Sikhs comprise only about 2% of the Indian population.

* "India is a holy country of holidays." - Supreme Court Justice Mehta's candid oral observation on the proliferation of holidays in India

* "When you consider the remnants of an incomplete action or an unconquered enemy, they will destroy you like the unextinguished remnant of a fire." - Thiruvalluvar, Thirukkural 674