When I was a teenager, I had a mate called John Nye – he serviced the vending machines that dispensed chocolate bars and coffee at Ford.
John told me what fascinated him was the effort some blokes would go to, to cheat.
The machines only took 10p pieces and were calibrated to measure the coins precisely and to weigh them exactly.
Any coins that didn’t match the size and weight were rejected.
And yet there were always some metal discs among the change in the machines.
That meant some people were spending ages to make perfect copies of those 10p coins.
The measurements were so exact it took a good few hours’ work to machine the fake coins to such tight tolerances.
Now
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