Has the cost of building software dropped 90%?

> I've had Claude Code write an entire unit/integration test suite in a few hours (300+ tests) for a fairly complex internal tool. This would take me, or many developers I know and respect, days to write by hand.

I have no problem believing that Claude generated 300 passing tests. I have a very hard time believing those tests were all well thought out, consise, actually testing the desired behavior while communicating to the next person or agent how the system under test is supposed to work. I'd give very good odds at least some of those tests are subtly testing themselves (ex mocking a function, calling said function, then asserting the mock was called). Many of them are probably also testing implementation details that were never intended to be part of the contract.

I'm not anti-AI, I use it regularly, but all of these articles about how crazy productive it is skip over the crazy amount of supervision it needs. Yes, it can spit out code fast, but unless your prepared to spend a significant chunk of that 'saved" time CAREFULLY (more carefully than with a human) reviewing code, you've accepted a big drop in quality.

Hundreds of tests that were written basically for free in a few minutes even though a lot of them are kind of dumb?

Or hundreds of tests that were written for a five figure sum that took weeks or months, and only some of them are kind of dumb?

If you’re just thinking of code as the end in and of itself, then of course, the handcrafted artisanal product is better. If you think of code like an owner, an incidental expense towards solving a problem that has value, then cheap and disposable wins every time. We can throw our hands up about “quality“ and all that, but that baby was thrown out with the bathwater a very, very long time ago. The modern Web is slower than the older web. Desktop applications are just web browsers. Enterprise software barely works. Windows 11 happened. I don’t think anybody even bothers to scrutinize their dependency chains except for, I don’t know, like maybe missile guidance or something. And I just want to say Claude is not responsible for any of this. You humans are.

Instead of writing hundreds of useless tests so that the code coverage report shows high numbers, it is better to write a couple dozen tests based on business needs and code complexity.