In the not too distant future, with sentient machines running the planet, humans now spend their lives kept in a vegetative state whilst the computational power of their brains' is used to mine Bitcoins. Never a currency, and no longer even a speculative vehicle for economically illiterate fatheads, Bitcoin is now embraced as a religion, and the entirety of human existence is dedicated to mining the final coin in the block, the holy Bitcoin which legend has it will reveal the secrets of the universe.