"[..] each sphere marked with a symbol from the hallowed history of information processing. There was the ampersand, which had once symbolised a primitive form of abstraction. There was an ever-tumbling hourglass, still the universal symbol for an active computational process. There was the apple with a chunk missing, which (so Thalia had been led to believe) commemorated the suicidal poisoning of the info-theorist Turing himself."
- How Alastair Reynolds envisions future humanity will remember our age (from Aurora Rising).