Many people laugh about bitcoin and cryptocurrencies, but i am 100% sure that crypto currencies will change the world in a possitive direction, because as long as we use the money from the government that is styled to rob the work and services from its citizens, we can hardly become more independent and bring the system to fall. People already did and do exchange products and services privately, but only very limited and local. With the crypto currencies we have now the possibility to do it worldwide.