The mind has a hard time keeping quiet people in its memory track. But it is much easier and pleasing for the mind to remember someone really stupid. The evidence here proves how stupid people last longer in someones thoughts. It is important to understand that stupid people are like all other humans physically. Yet, because of the difference between smart and stupid people, smart human beings should give them some breathing space.
Teachers can learn that someone graced with stupidity, deserves more respect.
After all, they are special.