The chief banker at the bank for central banks, Agustín Carstens, cast doubt on bitcoin’s long-term viability Wednesday, saying it was only a matter of time before a 51% attack brings down the world’s original cryptocurrency.
...“Above all, investors must be cognizant that Bitcoin may well break down altogether. Scarcity and cryptography alone do not suffice to guarantee exchange,” he said.
...
“So, clearly, if digital money is to exist, the central bank must play a pivotal role, guaranteeing the stability of value, ensuring the elasticity of the aggregate supply of such money, and overseeing the overall security of the system,” he said.
https://www.coindesk.com/agustin-carstens-bitcoinPerhaps he should (a) be more cognizant about what he is putting into his mouth (it isn't healthy) and (b) what is coming out of it when he clearly doesn't know what he's talking about. My suggestion would be that he read more prior to pontificating.
He clearly has a not-so hidden agenda.