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Wow I can't use bard yet as I'm in the EU. But ChatGPT has never done something like this to me.

ChatGPT is ALWAYS doing stuff like this to me. Suggest code that doesn't compile, suggest SIMD instructions that don't exist, reiterate on incorrect answers with the exact same answer, etc. Granted I use ChatGPT 3.5.

> suggest SIMD instructions that don't exist

well that's one way to make code faster, just require the underlying hardware to compute things for you

Ok I don't use it so much for coding and I always use GPT4 (I got a subscription out because it's so useful).

But every time it gave me a very sensible solution.. Usually not something that worked right out of the box but never something totally stupid.

GPT4 produces dubious Rust code all the time for me, especially when I point out mistakes. It gets into a cycle of doubling down on mistakes and degrading into more and more bizarre solutions and gets into a loop of repeating itself.

It gets the rough outline of a solution OK but very easily gets lost if the problem requires 2 or 3 levels of what I guess I'd call nested analysis. Or rather, it's fine for creating a surface solution, but it gets lost in the weeds quite easily for things like type system or borrow checker problems.

Because it doesn't reason -- it (re)produces patterns.

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