In reply to Frank R.:
> Should have really gone with qubits instead of bits. That way, a single qubit grade could be anything from Mod through VDiff to E11 in superposition, ending all grading disputes forever.
More than that, until you climb the route, the grade is just a superposition of all possible grades with a probability distribution as shown in the UKC logbooks. Only when you actually climb the route does the grade-function collapse down to a single value that's right for you on that day. There's also some evidence that nearby routes are entangled and once you've climb one the uncertainty of adjacent routes becomes well defined. Perhaps.