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I like the spirit of proof-of-stake because it tries to solve the problem, but I’m going to point out two things: Proof-of-stake is not yet proven, and, prior to proof-of-work, nobody was sure that decentralized consensus was possible. When proof-of-work gained acceptance, computer scientists were running naked in the streets with excitement. Therefore I default to extreme skepticism - but I’ll keep my eye out for any nerdy-looking streakers. Anybody who’s been involved in crypto-currencies for more than a year who smoothly transitions from “PoW is a great revolution” to “obviously PoW was never the long term solution” deserves a hard poke in the eye for the duration of my choosing.

PwC is one of the most powerful companies in the world, especially when it's in lockstep with the other three big global consulting and auditing firms, KPMG, EY (formerly known as Ernst & Young) and Deloitte. Known together as the "Big Four," this quartet of companies generally flies under the radar of public awareness.