Even if a serious flaw in the current encryption algorithm is found, it's feasible to create a new encryption algorithm and support both, simultaneously, allowi

Even if a serious flaw in the current encryption algorithm is found, it's feasible to create a new encryption algorithm and support both, simultaneously, allowing people to transfer their coins over to the new one. If some quantum computing mechanism is developed that negates all cryptography entirely, then we will probably be living in a world with unlimited computing power and the robots will have taken over anyway.