Philip Schaff... the unprofitable plays, frivolous recreations, sportings, and gamings which are invented to pass away the precious time, and divert the mind from the witness of God ...
2013-06-28, Tom Vanderbilt, The lose-lose logic of the machine zone, The US gaming industry, in a pamphlet called Demystifying Slot Machines …, argues that "slot manufacturers need to build devices for a society with a decreasing attention span and an increasing demand for exciting, fast-paced entertainment, all in a marketplace overflowing with competing entertainment options".
Careful, strategic use of rules to achieve one's purposes, as one would use the rules of a game.