Yeah, knowing what words to use is half the battle. Quickly throw away a prompt like "Hey, `make build` takes five minutes, could you make it fast enough to run under 1 minute" and the agent will do some work and say "Done, now the build takes 25 seconds as we're skipping the step of building the images, use `make build INCLUDE_IMAGES=true` when you want to build with images". It's not wrong, given the prompt, but takes a bit to get used to how they approach things.