One particular reason is that more knowledgeable individuals are less likely to have careless omissions in their reasoning. Most real-world problems are over-c

One particular reason is that more knowledgeable individuals are less likely to have careless omissions in their reasoning. Most real-world problems are over-constrained or under-constrained, and a missing axiom (as much as you can have axioms for things as fuzzy as the real world) can give bogus results without being immediately obvious.