People who are very smart can accidentally have too much faith in their arguments.

They truly are very smart.

But then they fall prey to "if you assume a spherical cow in a perfect vacuum" style arguments that are right in theory but wrong in practice.

There's no single reason they're wrong, so they can't be refuted in the intellectual plane.

It's just... reality is messy and refuses to be as clean as their intellect supposes.

Straussians are more likely to make this analytical mistake^[c].