[hnben]

> then suddenly receive a lecture about velocity, moving fast, being efficient

I like to give the opposite kind of lecture, like when someone refused to even consider alternative ways of solving a problem. Some phrases I like to throw around: "you just wasted 2 days of work, because you skipped 30min of research at the start", or "it's arrogant to assume, you'll find the perfect solution on the very first try".