Be able to sneeze without sounding ridiculous. That means neither stifling yourself or spraying your immediate vicinity.

Know how your representatives stand on major national or state issues.

Know the official post office abbreviations for all 50 states without having to consult a list.

Be sure to expose yourself to criticism: A fine polish requires an abrasive.

Capital punishment is the source of many an argument, both good and bad.

Know where to find the sunrise and sunset times and note how the sky looks at those times, at least once.

Know why certain foods, such as truffles, are expensive. It's not because they taste best.