CH Health Tech Advisory

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AI Substrate

Working notes from building a personal AI substrate. The durable memory, structured context, and provenance layer that turns raw model calls into a system you can actually act on. Lessons from running it daily, not from a whitepaper.

AI is becoming the substrate underneath ordinary work, not a feature bolted onto it. The throughline here is what changes when building software no longer requires being a programmer: someone who walked away from code for 25 years can ship a working tool in the time it takes to eat lunch. The shift moves the bottleneck from technical skill to knowing what is worth making, and treats agentic AI as a default capability rather than a specialist's preserve.