I remember having a conversation with a bloke from Stroud in the Admiral Benbow pub in Bristol, in 1983, where I posited the argument that as computer usage became more prevalent, humans would evolve to have no fingers as such but just little stumpy flippers, with which to jab away at keyboards.
He countered, not unreasonably, by describing my theory as ****e, saying 'How would we get our money out of our pockets with short, stumpy digits?'
We won't need to, I retorted, financial transactions will be entirely electronic.
'Ernie, you're a no-nowt ****', he cheerfully rejoined, in a deep west country drawl, 'Get your hand in your pocket whilst you still can and buy us a pint.'
During that evening I think I invented Bitcoin.