Because LLMs and tools are not instant.

Even pre-AI I would work in parallel while I waited for tests to finish, or deploy to go out or whatever.

They're not, but the way we're filling our time while waiting for LLMs involves much more context switching than how it was with tools and human bottlenecks like manual coding. I think it's fine to work on two or three things at once, provided we don't let the LLMs decide when we should tend to which task.

	▲	paulddraper an hour ago \| parent [-]
		I.e. a “manager” schedule not a “maker” schedule. [1] The agents are the makers; you switch among them. Either that or watch grass grow. [1] https://www.paulgraham.com/makersschedule.html