by Zoë Pollock

Vorjack proposes one:

Think of how useful it would be to if we had a unit of wrongness. Let’s say we had a unit – for absolutely no reason at all let’s call it a “beck” – that would allow us to express how wrong something is. “Ooh, close, but you’re wrong by 3 millibecks.” or “Whoa, off by a kilobeck.”

It could join other useful measurements, like the GRay unit, which is a measure of the amount of insanity on display, or the millihelen, which is the amount of energy needed to launch a single ship (think about it).