Comment by alendit

The growth of the blockchains will slow drastically, as the flaw in 'Metcalfe's law' - which states that the number of potential connections in a network is proportional to the square of the number of participants-becomes apparent: most people have nothing to sign for each other! By 2020 or so, it will become clear that the blockchains' impact on the economy has been no greater than the fax machine's.