That's kind of my point. Engineers are about black and white because that's what's required to make decisions, to ship things, to actually make something work.

Actionable truths are black and white.

Anyone can say "Oh, it's nuanced, it's complicated, it's hard to say for sure." The challenge is in penetrating that nuance and identifying what it is possible to make definitive, black-and-white statements about (i.e., to find the truth). To the extent that any group in society does this for a living, it's engineers.