The metaphor never quite works for me because debt is something you decide to take on, and most of what I’ve inherited nobody decided, it just piled up. What I do in practice is smaller than the metaphor suggests. I tidy the code I came in to touch and leave the rest for its own change, mostly because a refactor bundled into a feature branch makes the review harder and the bisect painful later. Agents have made that harder to stick to. Ask one to read a file and it’ll often come back having rewritten half of it. https://prickles.org/tenet/leave-it-better/P6

I’ve worked on both kinds of codebase and on the big ones nobody ever had the full picture anyway. The understanding got rebuilt when it was needed, from the tests, the docs and the commit history. Agents make that rebuilding much quicker, so partial understanding doesn’t worry me too much, as long as the team keeps writing those things down. If they stop bothering because the agent seems to cope without them, that’s where I’d expect the trouble to start. I’ve written up the tests side of this here: https://prickles.org/tenet/living-documentation/TS1

Whether this goes wrong comes down to the review bar rather than the tool. A standard library is the last place you want code nobody on the team can explain, and if maintainers hold review to that standard it matters much less who or what typed the first draft. The rejected-volunteers detail would worry me more, that’s a maintainer bandwidth problem no tool fixes.

The ambiguity is exactly why a spec has to be runnable. Natural language always leaves room, so what carries the weight is the acceptance check the agent can run and fail against, not the prose. If nothing can fail the output, the ambiguity just moves downstream into the code.

The instinct you described, using the LLM for the regex because you can verify it immediately, is the right line to hold. The trouble starts when the output isn’t cheap to check, that’s where the judgment you’re worried about losing actually goes. For getting back up to speed I’d lean the other way deliberately, let it explain an error or a library you don’t know, but write the thing you’re trying to relearn by hand, because the parts you type are the parts that stay in your head. Git’s worth the hour even for solo projects, the saved-folder backups stop scaling the moment you want to know what changed between two of them.

The ‘who watches the watchers’ line lands. What I’d add is that tests-as-the-gate only works if they could have failed, and a suite written next to the feature tends to certify the behaviour that’s there rather than the behaviour you wanted. The domain knowledge you mentioned is what closes that gap, someone who knows the intended outcome writes the assertion the code can genuinely fail. Agreed it’s a separate skill set, and it’s the one that decides whether a passing gate means anything at all.

Agree most with the audit-fatigue point. A signal that is always red trains everyone to ignore red, and the same failure kills lint warnings and flaky test suites. The other line that stuck was taking a dependency without deciding to. We started listing direct dependencies in review for exactly that reason, adding one became a decision someone makes rather than a side effect of npm install, and the conversation it forces is usually short but occasionally stops a bad one.

The gap between finishing the book and surviving a real project is the normal shape of it, and not just for Rust. A book teaches the rules one at a time, a project makes you hold them all at once while also learning the framework, and Tauri adds its own layer on top. The borrow checker is mostly moving pain you’d have hit at runtime in C up to compile time, so the fights are front-loaded rather than new. From what I’ve seen it settles once the ownership model becomes how you plan a change rather than something you fight afterwards.

Agreed. An agent only multiplies what’s already in the codebase. If you’ve got tests, clear boundaries and the rules written down, it genuinely flies. If it’s the usual undocumented mess, you just get more mess, faster. Which is probably why the shops that dodged that groundwork for years are getting the least out of AI now. There’s nothing solid under it to build on.

What carries over from the old rockstar is that they produced faster than anyone else could follow, and whoever inherited the code paid for it later. An agent does the same without the ego. It’ll turn out a week of plausible-looking code in an afternoon, and the slow part becomes reading and understanding it rather than writing it. What’s worked for us is making the agent meet the standards before the code lands, a linter and a couple of runnable checks in the way, rather than trusting a reviewer to catch every miss when they’re forty files deep and tired.

The limitation is the debug adapter, not VSCodium itself. The FOSS C# adapter, netcoredbg, can’t feed stdin through the integrated terminal. Only Microsoft’s vsdbg does that, and its licence ties it to official VS Code and Visual Studio. The way round it that’s worked for me is to skip launch mode and attach instead: start the program yourself in a normal terminal, then use an attach configuration to hook netcoredbg onto the running process. You get breakpoints and inspection, and since it’s a real terminal the stdin behaves. Not as smooth as launch, but it stays fully FOSS.

The enum is a real improvement over bare integer indices, the call site reads as a name rather than a magic 7. The bit I’d watch is what the enum actually maps to. If it maps to a fixed offset you’ve named the brittleness rather than removed it, since a reordered column still breaks it silently. If it maps to a field identity, and you resolve the offset from a header or a known layout, the name carries the meaning and the position is free to move without taking the parser down.

Claude Code, mostly, but I’m with Scipitie that the tool matters less than the process around it. What’s helped most is writing the project’s rules and conventions into files the agent reads each session, then putting the non-negotiable ones behind a linter or a test so it can’t quietly skip them. Treated that way it behaves a lot like the junior who’s read all the books and understood half of them. Left to its own judgement it drifts, which is the part the guardrails are there to catch.

There’s a useful split lurking in this. For narrow agentic work like retrieval over internal docs, structured classification, test scaffolding, deterministic refactor passes, a self-hosted 30B-class model can be fine and the inference economics work out at team scale. For multi-step planning and the harder agent loops, the frontier gap still shows up in the number of retries and the time-to-correct-answer.

The honest test is to pick the prompt category that’s costing you the most and benchmark something like Qwen 2.5 Coder 32B or DeepSeek V3 against whatever you’re paying for now. If the gap is small you’ve found your candidate. If it isn’t, you’ve at least costed the gap accurately rather than guessing at it.

The two costs people underestimate are the GPU box (plus a second one for the eval/staging path) and the maintenance overhead. Model picks go stale fast and someone on the team has to own that, or you end up shipping a Llama 3.1 stack into 2026 because nobody rebuilt the harness for whatever’s current.

squaresinger’s point matches what I’ve found. Once three agents are going, you become the coordination point - you’re holding the plan and reviewing all of it, and that part doesn’t scale the way the generating does. What’s kept it manageable for me is treating each one like an intern on a single, well-specified task I can check before it moves on, rather than running a swarm and hoping it converges. Wrote this up here: https://prickles.org/tenet/the-intern-pattern/AI1