Strategy requires thought, tactics require observation.
– Max Euwe
Tactics is what you do when there is something to do; strategy is what you do when there is nothing to do.
With most books and movies, one doesn’t spend much time and energy asking oneself how to read, how to watch—one just reads or watches. With games, most of the time is spent thinking of tactics, of strategy, of opponents’ psychology, which leaves little time and brain power for dealing in depth with a serious topic