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Unmesh Joshi, Rebecca Parsons, and Martin Fowler

1 articles by Unmesh Joshi, Rebecca Parsons, and Martin Fowler.

Architecture — Conversation: LLMs and the what/how loop

Conversation: LLMs and the what/how loop

A conversation between Unmesh, Rebecca, and Martin on how LLMs help us shape the abstractions in our software. We view our challenge as building systems that survive change, requiring us to manage our cognitive load. We can do this by mapping the “what” of we want our software to do into the “how” of programming languages. This “what” and “how” are built up in a feedback loop. TDD helps us operati

UJUnmesh Joshi, Rebecca Parsons, and Martin Fowler·January 21, 2026Architecture