I think it's more accurate to say that lawyers only know about lawyer stuff. They live in their own constructed reality that is quite different from normal logic, intuition, and processes.
Lawyers only drag their customers up into a constructed reality. They're paid to solve problems in lawspace, not in the real world.
Crime, family law, wills, industrial espionage, bankruptcy, insurance disputes, personal injury…
Shame there aren't any lawyers who help folks out with the real world situations.