The proliferation of nondeterministically generated code is here to stay. Part of our response must be more dynamic, more comprehensive and more realistic workload simulation and testing frameworks.
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And I think it's less about non-deterministic code (the code is actually still deterministic) but more about this new-fangled tool out there that finally allows non-coders to generate something that looks like it works. And in many cases it does.
Like a movie set. Viewed from the right angle it looks just right. Peek behind the curtain and it's all wood, thinly painted, and it's usually easier to rebuild from scratch than to add a layer on top.
I suspect that we're going to witness a (further) fork within developers. Let's call them the PM-style developers on one side and the system-style developers on the other.
The PM-style developers will be using popular loosely/dynamically-typed languages because they're easy to generate and they'll give you prototypes quickly.
The system-style developers will be using stricter languages and type systems and/or lots of TDD because this will make it easier to catch the generated code's blind spots.
One can imagine that these will be two clearly distinct professions with distinct toolsets.
There is a non-trivial cost in taking apart the AI code to ensure it's correct, even with tests. And I think it's easy to become slower than writing it from scratch.