"The first is theoretical--ordinary computers are hugely energy inefficient--some eight orders of magnitude worse than is theoretically possible. " Eh? Is this

"The first is theoretical--ordinary computers are hugely energy inefficient--some eight orders of magnitude worse than is theoretically possible. " Eh? Is this saying that ordinary computers are eight orders of magnitude more energy-inefficient than the maximum possble inefficiency? Oh, wait, they mean the other possibility. Also, as others mention, they only build two gates, and one of them doesn't work very well.