The thing about mistakes is that they immediately show up as red flags on our radar, prompting us to mercilessly berate and verbally flay the offender.
The most frequent culprits of this are those with substantial intellects, or at least those who claim to possess one. With power comes ego, and with ego comes attitude.
Among the dearth of of statements that can be taken as gospel there is this: everybody does indeed make mistakes, and smart people are nowhere near exempt from this. They just do a better job at hiding it, and they also make different kinds of mistakes that not many others catch on to.
Just something to think about.