Build slack into their quotes" just teaches clients you're slow and overpriced.

Walt billed you in wisdom and you paid in laughs lol

Feels familiar, man. Had an old guy show me to lay gaskets out flat the night before instead of fighting them off a coil, and I felt like a fool for every time I'd done it the hard way. It's funny how nobody writes that stuff down, it just lives in these guys' heads until they bother to say it out loud.