Television's perfect. You turn a few knobs, a few of those mechanical adjustments at which the higher apes are so proficient, and lean back and drain your mind of all thought. And there you are watching the bubbles in the primeval ooze. You don't have to concentrate. You don't have to react. You don't have to remember. You don't miss your brain because you don't need it. Your heart and liver and lungs continue to function normally. Apart from that, all is peace and quiet. You are in the man's nirvana. And if some poor nasty minded person comes along and says you look like a fly on a can of garbage, pay him no mind. He probably hasn't got the price of a television set.
At least half the mystery novels published violate the law that the solution, once revealed, must seem to be inevitable.
Ability is what you're capable of doing. Motivation determines what you do. Attitude determines how well you do it.