Item — HN Reader

> The problem is that this approach is not sustainable. Errors compound. The cost to fix one issue might seem small at first, but over a stretch of time all these "oopsies" become architectural spaghetti that can only be fixed with a complete rewrite, which will certainly become more expensive than getting the code "organically" developed.

That's so far been called software development.

All software developed by people suffers from this issue.

Where exactly is the novelty?

> The only way I see AI coding working in the long run is if we go back to a Waterfall/BDUF process and having actual engineering.

Nonsense. The problem is exactly the same.

With agents iterations are much faster, and this can mean things can get messier faster but can get in shape just as fast.

Ironically, agents improve the quality of the deliverable as well. Approaches such as spec-driven development do a far better job delivering features up to spec than manual coding by flesh and blood developers.

There's an awful lot of baseless scaremongering in your post. You make it sound like with AI assisted coding developers stopped paying any attention to quality.

2 comments

> All software developed by people suffers from this issue.

And that’s pretty much where you are wrong. Take any long running open source project and you can see the craftsmanship that goes into it. It may not be perfect, but hacks are clearly marked as such.

> And that’s pretty much where you are wrong. Take any long running open source project and (...)

I think you are demonstrating a clear lack of insight and experience in software development settings, including FLOSS projects. I can name you a dozen of fairly known FLOSS projects which are a big ball of mud. Just go to the likes of GitHub, check out the list of popular projects, and peek at their code. You will get a very mixed set of results.

> Where exactly is the novelty?

The compounding speed. Your devs might reach a point where they have to rewrite and refactor, in a decade.

Your LLM, with its higher throughput, may put you in that game breaking situation next week.

> The compounding speed. Your devs might reach a point where they have to rewrite and refactor, in a decade.

I think that this is exactly why this scaremongering breaks down. If you believe the compounding speed is that greater, wouldn't you be compelled to accept that refactoring and cleaning things up is just as fast and effortless?

I mean, you have a tool that writes software for you following your commands. If you are that concerned with maintainability then what can possibly compell you to not invest any effort in it?

> wouldn't you be compelled to accept that refactoring and cleaning things up is just as fast and effortless?

No. not at all. Imagine that each unit of work (a new PR for a feature, a bugfix) builds something that is 99% close to optimal and you can only get to bring it to 100% if you spend time to really review and rewrite the "not good" part. Also, for the sake of argument, let's just say that the overall quality of the system is geometric mean of the quality score of each unit of work. The only way to get an "ideal" system is by ensuring that work done on it follows the "ideal" architecture - for whatever "ideal" means for the developers/maintainers.

You are arguing that you are saving time because you only have to write the 1% that the AI got wrong, so you'd be getting a 100x speed up. My argument is that there is not so much time because if you want 100% quality, you will have to review 100% of the code. Understanding the produced code is the time-consuming part, not typing it out.

So, the only way to have these time savings by working with coding agents is if you accept that the code generated is good enough to not have careful review. But if you do that, then each unit of work that you tell yourself "not ideal but good enough. Ship it and we refactor later" ends up bringing the overall system quality. If you have 10 of these "99% good enough" PRs, and your overall system score is already at 90%. With 50 of these, the score dives down to 60%.

This is what OP and I are talking about "compounding" issues: unless we get to a point where generated code does not need review at all, your development speed will always be bottle-necked by the human in the loop. The only way to get speed benefits from the code generation is if we remove the human in the loop, but in doing so quality will drop faster than you can fix it.