01
AI Systems
Good AI products are clear about what the system knows, what it can do, how it is evaluated and when a person should take over.
Thinking
Practical Notes On Product, AI & Data.
Essays based on building AI systems, consumer products and marketplaces. The goal is to make difficult product decisions easier to understand.
EDITORIAL PRINCIPLE If an idea does not help someone make a better product decision, it needs more work.
FEATURED · AI SYSTEMS
AI Evals Are Product Design, Not QA
The question is not whether the model gave a “good answer.” The question is whether the system helped a user make a better decision—and whether you can prove why.
Read The Essay MODEL QUALITY WORKFLOW RELIABILITY USER DECISION BUSINESS OUTCOME
02
Product & 0→1
Start with the smallest useful product, learn from real users and expand only when the evidence supports it.
03
Data & Growth
Sustainable growth needs reliable measurement, useful experiments and a clear benefit for the user.
04
Leadership
Teams move faster when ownership, evidence, trade-offs and escalation paths are clear.
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