Know the function of a fuse box and the appearance of a tripped circuit breaker.

Know how weather, especially humidity, can affect the movement of doors and windows.

Know how to behave at a buffet. Take a clean plate for a second helping.

Know how to drive safely when it's raining or when it's snowing. The two conditions are different.

Know what happens when an individual declares bankruptcy and how it affects his or her life.

Attention-deficit disorders seem to abound in modern society, and we don't know the cause.