Some initial thoughts that I haven’t fully thought through yet:
Good engineers walk away: They realize that they are looking at something stupid, and avoid it. They can walk away from something dumb that they did, and cut their losses: they know it’s better to admit they made a mistake than to be married to a bad idea and keep investing in it.
Good engineers will take a risk. They will tell somebody their idea sucks. To their face. They’ll figure out how somebody can be a better engineer and tell them on their review, rather than providing a list of platitudes for fear of retribution.
Good engineers will err on the side of caution in hiring decisions. They won’t accept a hire they aren’t sure about, and they won’t hesitate to be honest in their opinions. If the candidate can’t code their way out of a paper bag, then “this two-bit hack couldn’t code their way out of a paper bag.”