I told this story about the old man in his 70s walking through a plant, giving his multi-decades expertise in how to solve our foam problems.
Everyone else wore a polo... This guy genuinely didn't care. He was making $500/hr and didn't really want to be there. He was begged. He did some weird stuff with sticky notes on $100k molds... (and he didn't solve our problem).
But you knew this guy was an expert.