Bitcoin may give the world a clearer yardstick reference point for units of value. Bitcoin can change the world by giving the world a better unit to measure value, to hold value and to transfer value.

Bitcoin will change our mentality about money. It is not enforced, so if it is accumulated by few, then there will be no Bitcoins available, and users will use something else. So the accumulators, will lose money. The same happens with fiat currency, but banks issue currency, every time a loan is given. Because fiat currency is enforced, everybody MUST use it. This is the only difference. Since our mentality for money, changes, voila! the world has been already changed.