OBSERVATION (bank shots)

The purpose of a bank shot is often (always?) to break symmetry – e.g., a train backing up in the station before going forward out of the station, and the secret to being able to tear a telephone book in half with your bare hands being to first ‘scaffold’ it (cf: “Divide and conquer.”).
(In ordinary language, a bank shot is usually referred to as ‘preparation’.)
[General Systems Theory]