Subaru is what Japanese call the Pleiades cluster. The car's logo evokes its six brightest stars.pic.twitter.com/bisozxqW2O
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@neiltyson But why? There is a theory that 7 is venerated because it's the 1st number you can't count at a glance.pic.twitter.com/qVoSBSpc1I
@neiltyson Also that it's cos the heptagon is the simplest regular polygon not classically constructible, w compass & unmarked straightedge
The key step. Length x has to be 'copied' from A to B.Easy w 2 marks on straightedge. Impossible without @neiltysonpic.twitter.com/cA6BxMyRlE
Neil! I remember you saying Isaac Newton had a thing for the number seven!
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