There's literally a study out the shows when developers think LLMs are making them 20% faster, it turned out to be making them 20% less productive: https://arx

There's literally a study out the shows when developers think LLMs are making them 20% faster, it turned out to be making them 20% less productive: https://arxiv.org/abs/2507.09089 https://arxiv.org/abs/2507.09089