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Notes from building Shelf

Product thinking, updates, and the messy middle of organizing life’s context.

Personal Context Infrastructure

What Killed the AI Pin: A Post-Mortem on Humane, Rabbit, and the Wearable Wave

Humane, Rabbit and the wearable AI wave did not fail only because of poor execution. They were built on the wrong input layer: ambient voice.

Divyaraj Chauhan · Aug 11, 2026

Personal Context Infrastructure

Why Every Attempt at “AI That Knows You” Has Bet on the Wrong Layer

AI wearables focused on listening, but most personal context already lives in screenshots, links, notes and saved media. The missing layer is personal context infrastructure.

Divyaraj Chauhan · Jul 24, 2026