A signal that is not used by the population at large can be used by mutant members as a kind of secret handshake to identify an in-group. Mutants can then cooperate with those who share the secret handshake and defect against the others.

The home team took several shots on goal but was unable to capitalize until late in the game.

Something classical that Annie couldn't immediately place, which was hardly surprising given that what Annie knew about symphonies could be written on the back of a postage stamp.

Nor were previous forced labor practices to be altered. On the contrary, as we shall see, they were merely rationalized and reinforced by the Salazarist system.