We were prepping to pour a floor, and we needed to lay down steel weld plates so that the metalworkers could install their beams.
I took a look and told him that the last five seemed to be off by about a foot each. He basically told me to shut the fuck up new guy, he's got 30 years experience more, don't tell him what to do, etc. etc.
I didn't push it much further. A foreman was nearby, basically took his side.
So we pour the concrete, cover it, let it cure, etc.
Next week the steelworkers come in.
Made sure to wear my best shit-eating grin as I handed the old codger the jackhammer.