Murray Rothbard

(1) they may provide a greater production of the same good per unit of time; or (2) they may allow the actor to consume goods that are not available at all with shorter processes of production.

Action requires an image of a desired end and “technological ideas” or plans on how to arrive at this end.

any given action, we can distinguish among three periods of time involved: the period before the action, the time absorbed by the action, and the period after the action has been completed.