Writing

What I'm building, learning, and thinking about.

A personal journal on Medium @isjustabhi. Titles, dates, and excerpts come from the public feed. Nothing here is invented.

Sep 1, 2026 · 8 min

Associated Variable Analysis: Finding Meaningful Connections in Data

Every dataset contains variables, but the real value of data often appears when we begin examining how those variables relate to one another. For example, does spending more time studying relate to better examination…

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Jun 13, 2026 · 4 min

The Layers I Mistook for Me

I spent years thinking I was my thoughts. Turns out that was only the third layer in. A while ago I wrote that for most of my life, I thought I was my thoughts. I still believe that was an important thing to notice. But…

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Jun 6, 2026 · 6 min

Your RAG App Keeps Missing the Right Answer. Here’s Why.

Part 3 of 10, Becoming an AI Engineer At the end of Part 2 I gave you homework: point your PDF app at a real document and find the question where it fails. If you did it, you found one. Maybe the answer was right there…

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Jun 5, 2026 · 6 min

I Pasted an 80-Page PDF Into ChatGPT. There’s a Much Better Way.

Part 2 of 10, Becoming an AI Engineer In Part 1 we got the model to return clean, structured data. But it had one painful limit: it only knows what it learned during training. Ask it about your company handbook, your…

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Jun 5, 2026 · 6 min

Stop Asking ChatGPT Nicely. Start Engineering Your Prompts.

Part 1 of 10, Becoming an AI Engineer The first time I shipped a feature powered by an LLM, it worked beautifully in the demo. Then it hit real users and started returning answers wrapped in friendly little sentences…

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May 31, 2026 · 1 min

Why I Keep Talking About the Mind

Someone asked me why I don’t talk about the deeper things. This is my honest answer. Today someone asked me, “Why do you keep talking about the mind? Why not talk about deeper things? Meditation. The witness. Who you…

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May 29, 2026 · 11 min

Building RAG End to End: From Zero to a Production Pipeline (With Code)

I’ve shipped retrieval systems that answer questions over millions of documents. Here is everything that actually matters, built up one honest layer at a time. Most RAG tutorials hand you a LangChain one-liner, the demo…

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May 29, 2026 · 6 min

The Eye That Cannot Find You

Everyone around you is quietly manifesting your downfall. That’s the promise of the evil eye. Here’s why it works, and the one shift that makes it stop. (Nazar) Image source cited from-Evil Eye in Judaism Someone is…

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May 25, 2026 · 3 min

ChatGPT Doesn’t Read Your Words. Here’s What It Actually Does.

A friend once asked me, “How does ChatGPT know what I mean?” I started to answer, then stopped. Because the honest reply is: it doesn’t. Not the way you and I know things. What happens between your question and its…

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May 22, 2026 · 4 min

Logistic Regression in 3 Minutes

The algorithm behind every “yes or no” decision online Every time your email app flags a message as spam, a bank decides whether your card swipe looks fraudulent, or Netflix decides whether you’re about to cancel —…

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