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Alexander Thom's book Megalithic Sites in Britain, published in 1967, caused huge controversy within academic archaeology. Thom's premise that Stone Age culture used complex mathematics and applied this to constructing monuments undermined the progressional idea of culture as continually advancing from savagery to civilisation. Glyn Daniel commissioned the eminent astronomer Sir Fred Hoyle to consider Thom's evidence for Archaeology magazine. Hoyle found that Thom's theories were essentially accurate.

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