Why Does AI Code Keep Rediscovering Expensive Computations?

An AI assistant asked to refactor a module treats the code as text to restructure, not as a system with a cost profile. Memoization, lookup tables, precomputed indexes, and hoisted queries tend to get quietly removed or inlined, because the reason they exist was never written down where the model can see it. This episode argues that caching is architectural knowledge rather than implementation detail, and that builders who let refactors run unchecked are paying the same expensive computation over and over without noticing until the bill or the latency spike shows up. Produced by VoxCrea.AI This episode is part of an ongoing series on governing AI-assisted coding using Claude Code. 👉 Each episode has a companion article — breaking down the key ideas in a clearer, more structured way. If you want to go deeper (and actually apply this), read today’s article here: 𝐂𝐥𝐚𝐮𝐝𝐞 𝐂𝐨𝐝𝐞 𝐂𝐨𝐧𝐯𝐞𝐫𝐬𝐚𝐭𝐢𝐨𝐧𝐬 At aijoe.ai, we build AI-powered systems like the ones discussed in this series. If you’re ready to turn an idea into a working application, we’d be glad to help.