im seriously true blockchain is carrying and hardworking while facebook just update blockchain everytime everysecond have a proccess it's too hard to carry if you are a developer it's not easy to use a blockchain. based on how they process blockchain and facebook i really concern in blockchain because the process and it a money if they get scam the money was process will lose so it's really hard just like facebook the hacker will hack the system but if the blockchain was hack many people will disappoint it.