Know the official post office abbreviations for all 50 states without having to consult a list.
Know the names of past and current artists who are most famous for playing their instruments.
Although spoken English doesn't obey the rules of written language, a person who doesn't know the rules thoroughly is at a great disadvantage.
Be able to sneeze without sounding ridiculous. That means neither stifling yourself or spraying your immediate vicinity.
Understand why casinos and racetracks stay in business - the gambler always loses over the long term.
Experts say you can't concentrate on more than one task at a time.
Know which officials are voted into office and which are appointed, and by whom.
Be able to draw an illustration as least well enough to get your point across to another person.
Be able to blow out a dinner candle without sending wax flying across the table.
The length of your education is less important than its breadth, and the length of your life is less important than its depth.