Fretting about a dearth of randomness seems like worrying that humanity might use up its last reserves of ignorance. - Brian Hayes

A big advantage of the serial-number approach to identity is that things stay the same even as they change.

The fact that randomness requires a physical rather than a mathematical source is noted by almost everyone who writes on the subject, and yet the oddity of this situation is not much remarked.

The absence of a golden rule for mattress flipping is a disappointment, but it does not pertend the demise of civilization. We can adapt; we can learn to live with it.