Bentham invented one. He came up with seven scales we should use to measure the pleasure created by anything we do: Intensity (how strong it is) Duration (how long it lasts) Certainty (how definite it is that it’ll work) Propinquity (how soon it can happen) Fecundity (how “lasting” it is—how much other pleasure it can lead to) Purity (how little pain it causes in relation to the pleasure it creates) Extent (how many people it benefits)
