Build the harness, buy the commodity

The interesting constraint is not speed. It is whether build the harness, buy the commodity leaves the next person more capable.

Buy commodities. Build the harness that makes your team’s judgment visible: policy, evals, audit, and exit.

Make-or-buy decisions should include the cost of undoing the choice. Soft lock-in is still lock-in.

I watch for two failure modes. First, leaders who disappear into strategy and lose the texture of the work. Second, leaders who never leave the details and never grow successors. Both produce brittle teams.

AI compresses the typing cost of building. It does not compress the ownership cost of running what you built.

A purchased AI tool still needs an owner on-call for failure modes, data handling, and process fit.

Sustainability shows up as fewer retries, right-sized environments, and CI that does not burn cycles for vanity. Efficiency is operational maturity.

On build the harness, buy the commodity, the leadership move is to make the invisible visible: ownership, verification, and the path for the next person.

When agents join the loop, treat them like junior systems: limited privileges, explicit tools, budgets, and a human who owns the outcome. Autonomy without audit is just distributed risk.

I prefer written decisions over verbal ones. Memory is a poor archive, and AI tools make fluent improvisation cheap — which raises the value of durable context.

None of this requires a new framework brand. It requires attention, a short feedback loop, and the humility to change process when agents join the workflow.

Coaching is the mechanism. Process is the memory. Tools are leverage — only when ownership stays human.