I've been arguing that it's POSSIBLE to get a small (but meaningful) uplift in productivity on average if you are careful with how you use LLMs, but at the same time, it's also extremely easy to actually negatively impact your productivity.

In both cases, you feel super productive all the time, because you are constantly putting in instructions and getting massive amounts of output, and this feels like constant & fast progress. It's scary how easy it is to waste time on LLMs while not even realizing you are wasting time.