There are as many different private key combinations as there are physical atoms in the known universe.
Blockchain technology stands to radically transform our concept of the corporation where machines, not humans, are both the customers and employees.
A payment conducted with bitcoin represents a paradigm shift in our concept of money - one where there is no division between currency and the system through which it flows.
Bitcoin may become a global reserve instrument as individuals use it both as a ledger for financial and informational assets.
Bitcoin represents a form of 'digital gold'.