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Assuming the nature of science fiction story telling of the period, Theodore Sturgeon's point was that humanity's flirtations with science began occurring with our capacity to write and transfer information. Not only was the transfer important but the ability to build on the knowledge of previous generations. Since all knowledge was based on the word of ...


12

He is most likely referring to the time since the beginnings of civilisation. Today, with more recent discoveries of proto-cities and neolithic settlements we'd say that civilisation started around 7,500 BC, or 9,500 years ago; in 1941, civilisation was generally held to have begun with Ancient Egypt which could, with a few rounding errors, be said to have ...


6

The correct double helix structure of DNA was published by Watson and Crick in April 1953. However, the idea that DNA molecules coiled into helices was somewhat older. Before the precise x-ray diffraction data that Rosalind Franklin produced in 1952–1953 was available, cruder measurements had already indicated that DNA molecules formed something like a ...


2

He's probably referring to the rise of what we'd see as the path of the state, and technology. Cities, complex stratified social structures, laws, trade, writing, mathematics, monuments. All of these did really start about 6000 years ago or a bit more (maybe a few thousand more depending when you date it from, but it's close enough to figure the concept he'...


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