alt Hacker NewsConversely, I often find coding agents privileging the existing code when they could do a much better job if they changed it to suit the new requirement.
I guess it comes down to how ossified you want your existing code to be.
If it's a big production application that's been running for decades then you probably want the minimum possible change.
If you're just experimenting with stuff and the project didn't exist at all 3 days ago then you want the agent to make it better rather than leave it alone.
Probably they just need to learn to calibrate themselves better to the project context.
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To get the agent to think for itself sometimes it feels like I have to delete a bunch of code and markdown first. Instruction to refactor/reconsider broadly has such mild success, I find.
I'll literally run an agent & tell it to clean up a markdown file that has too much design in it, delete the technical material, and/or delete key implementations/interfaces in the source, then tell a new session to do the work, come up with the design. (Then undelete and reconcile with less naive sessions.)
Path dependence is so strong. Right now I do this flow manually but I would very much like to codify this, make a skill for this pattern that serves so well.
Tell me you’re using Codex without telling me you’re using Codex :)
The tradeoff is highly contextual; it's not a tradeoff an agent can always make by inspecting the project themselves.
Even within the same project, for a given PR, there are some parts of the codebase I want to modify freely and some that I want fixed to reduce the diff and testing scope.
I try to explain up-front to the agent how aggressively they can modify the existing code and which parts, but I've had mixed success; usually they bias towards a minimal diff even if that means duplication or abusing some abstractions. If anyone has had better success, I'd love to hear your approach.