In the novel Strata instead of earning money you earn days, which act as a currency. Instead of paying for food etc with money you pay with 'days'.

In Time is a film with a similar concept where someone is giving away days. I thought Strata was the first instance of this, but I wasn't sure.

Is Strata the first instance of this, or is it older?

  • Time Value of Money :). This notion dates at least to Martín de Azpilcueta (1491–1586) of the School of Salamanca. Not directly identical but a related concept – DVK-on-Ahch-To Mar 10 '12 at 0:04
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    Or, if you will, to the first pre-historic society who told a captured prisoner of war with another tribe/nation "you get to live for as long as you do slave labor for us". In the words of TVTropes, this trope is "Older than Bible" – DVK-on-Ahch-To Mar 10 '12 at 0:05
  • @DVK Not as money but as currency, which you earn (and can then sell or drinks, food etc). In Strata the main character as lived for 200+ years by earning her days as a Planetary Engineer. – AncientSwordRage Mar 10 '12 at 0:10

Well there is a wikipedia article on Time based Currency. It was used by Hannu Rajaniemi in The Quantum Thief. I can't find much more n it. There is also a system called Time Banking that is hypothetical except for a few relatively unknowable medical plans such as Elderplan(which rewarded the elderly that maintained a healthy lifestyle). It is not actually a fictional concept, it has been implemented by various medical plans to varying degrees, though the first fiction I can find is called "Repent Harlequin" said the ticktockman

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  • That's very close with the "Repent.." story but no one can earn more time. How does the Quantum Theif go? – AncientSwordRage Mar 11 '12 at 22:35
  • Quantum Thief has a decent description and a few reviews at GoodReads ... from what I can tell, it doesn't describe the concept of 'time as money', but even if it does include this notion, it was published in Sept 2010, which doesn't pre-date Pritchett's Strata. It is Pritchett's version of Strata in the question reference, right? I can't find a reference to time as money as relates to Strata either, but Pritchett's DOES have planetary engineers. – Josh Mar 15 '12 at 18:33

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