NOTES

Insights

Essays on building AI properly — from enterprise governance to practitioner playbook.

Engineering

Harness Engineering Is the New Senior Discipline

The model is frozen. Everything that matters — memory, validation, tool use, permissioning — lives in the harness. This is where senior engineers now spend their time.

May 20, 20262 min readTensAI
Product

Build vs Buy vs Boost — the 2026 Decision Framework

Forty-two percent of companies abandoned most of their AI initiatives in 2025. The pattern that survived: Boost. Buy the model, layer your data and evals on top.

May 15, 20262 min readTensAI
Engineering

Context Engineering Has Replaced Prompt Engineering

Karpathy named it. Schmid formalized the four operations. A 2026 study found that context files can actually reduce success rates. Quality, not presence, is the variable.

May 10, 20262 min readTensAI