Kush Bhatnagar

Learn. Build. Explain.

Hi, I’m Kush 👋

Technical Product Manager · 17+ years in tech · 5+ years in product · leading an enterprise AI platform

I lead an enterprise AI platform by day and build my own AI products after hours. This blog is my learning system, in public: I learn something, I build with it, and then I explain it, so that product people and non-technical folks in tech can understand AI and product concepts without the jargon.

Learn Tech Digest Digital Dhaba every Thursday, plus Learning Notes: my own notes on what I read. Build Build Log Products I'm building in public: the decisions, the mistakes and the lessons. Explain Concept Breakdown Comic-style breakdowns of ML, GenAI, cloud and product concepts. No jargon.
New Tech Digest Oct 3 · The last 7 days in tech, AI & LLMs →

Latest Concept Breakdowns

All breakdowns →

Recent posts

Digital Dhaba: how I built an AI-written tech newsletter that can't make up news

A weekly tech digest where code picks the stories, Claude only writes from them, and every item links to its source.

October 4, 2026 Â· 3 min Â· Kush Bhatnagar

Training an AI for one skill quietly changes its other answers

Post-training a model for one skill nudges its answers on unrelated questions, and that changes how I think about protecting models from copying.

October 4, 2026 Â· 2 min Â· Kush Bhatnagar

What is Clustering

Discover the essentials of Clustering in a classroom comic. Clustering - where data points find their natural friend groups!

September 1, 2025 Â· 1 min Â· Kush Bhatnagar

What is Bias and Variance

Discover the essentials of Bias & Variance in a classroom comic. Good predictions need to be both accurate (hit the target) and consistent (hit the same spot)!

August 16, 2025 Â· 1 min Â· Kush Bhatnagar

What is Regularization

Discover the essentials of Regularization in a classroom comic.

August 14, 2025 Â· 1 min Â· Kush Bhatnagar