If you or I had bought £100 of bitcoin ten years ago, you or I would now have £2 million and change in the cryptobank. If we’d bought it a year before that, when a bitcoin cost “basically nothing”, we’d be well on our way to being billionaires. A string of digital characters with no physical intrinsic value that cost five thousandths of a penny in 2010 is, at the time of going to press, worth upwards of £23,000 a bit. In 2013 a man threw away a laptop hard drive containing 7,500 bitcoins. If only the poor guy had thrown it in the attic, he’d be worth £183 million today.

The rollercoaster ride that is cryptocurrency is absurd, but it is also ruthlessly logical.