Tirita el the Second sleep by Robert Harris - klarigo: la Dua Dormo, estas verko de konjekta fikcio lokita en Britio 800 jarojn en la estonteco, post "sistema kolapso de teknika civilizo" konata kiel la Apokalipso.

‘There might’. He nodded.

Most of the ancients’ business was conducted not with coins or even paper but with electric tokens of money sent flying through the air. When the Apocalypse overwhelmed them, their devices failed and their wealth vanished. A man such as Morgenstein would have foreseen the danger and might well have had the prudence to lay down a store of gold – the only safe money since the beginning of time. Might I trouble you for more gin, again?

Hancock leaned over and filled his glass. ‘If the ancients were foolish enough to trade with airy tokens ‘tis no wonder they were ruined.