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I too have seen anecdotes that people "feel" more productive. But science says that they're 19% less productive. I'm going to go with science on this one.

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The study that said devs were 19% less productive was flawed in a number of ways: small sample size, poorly chosen tasks, no prior training on AI tools.

The science is by no means conclusive. A joint Harvard / MIT study found developers completed tasks up to 50% faster [0]!

[0] https://arxiv.org/abs/2302.06590

Further, the problem with the word "productive" is that it's often measured in quantity and speed, not quality.

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