You base this on the slippery-slope argument: selected cases may grow into casual practice over time.

ECONOMIST: Torture arguments

Middleton notes that December 2007 will see the opening of 60 ski-in, ski-out suites at the base of Big Sky, units expressly designed for slope-side entertaining.

FORBES: Just the ticket

If expansions in base money were correlated with predictably higher GDP growth, and contractions in base money were correlated with predictably lower GDP growth, the slope of the line would be flatter and the fit would still be reasonably good.

FORBES: Has The Fed Lost Control?