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Ironic that your reply to a piece about strawmen is nothing but a strawman. Of course he is not meaning what you're saying, he's talking about context switching. If I have to wait 15 seconds for my tests to run, I start doing something else and my thought process around the problem is gone.

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I don't understand. Are you not continuing to think about the problem (or the next problem) while tests are running, regardless of how long they take?

If you move on to the next problem, then your test finishes and forces you to move back to the original problem then you just had to do 2 context switches. If you never had to wait for the test result then you could have eliminated those.

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