Doing things well vs. things worth doing

The ability to do something well or efficiently doesn’t make it worth doing.

In fact, there’s nothing so useless as doing something with great efficiency that should not be done at all.  If we are wise, we decide what things are worth doing, and only then seek to do them better or faster.

The world’s most efficient door-to-door encyclopedia salesman is pointless if no one is buying encyclopedias.