Comment by gahahaha

The author obviously understands that Bitcoin has no central bank - his point is that if it ever were to be used as a currency it would need one. Would you like your salary paid in bitcoins? You wouldn't know from one month to the next what you could afford to buy since prices would be so volatile. Bitcoin might have other uses like easy electronic payments - but the author points out that if you want to buy something legally it is quite convenient already today with the currencies we have.