Michele Durante

Notes on payments, fintech and software engineering.

Economies and diseconomies of scale in code: what economists know about DRY

11 October 2026

What economies of scale, and where they end, say about DRY: sharing code pays up to a point, and economics tells you where that point is.

A valid payment can still go to the wrong person: an exercise in fencing in an AI agent

8 October 2026

Sketching an AI agent that repairs rejected payments: it can be built, but most of the work sits around the agent, not in it.

The junior work we think we're saving

30 September 2026

Handing the junior work to AI saves less than it seems. What I took from Christian Catalini's essay on the economics of AI: producing work is getting cheap, checking it is not, and that moves where the value is.