When a nation is on the brink of financial crisis, its government does not violate free-market principles if, in order to prevent economic collapse, it limits the extent to which foreign investors and lenders can withdraw their money  After all, the right to free speech does not include the right to shout Fire
in a crowded theatre, and the harm done as investors and lenders rush madly to get their money out before everyone else does can be just as real as the harm resulting from a stampede in a theatre
applies an empirical generalization to reach a conclusion about a particular case