Quantum computing is in its infancy, but it's still very tough to wrap one's head around. Here's one way to think of it: traditional computers complete calculations based on bits. A bit can have either of two values--zero or one--at any given point. But quantum computers use something called qubits, which aren't constrained by a binary nature--they can be zero, one, or anything in between, or several values, all at the same time. That makes them very valuable to calculate probability, or likelihood--anything that has more than one possible answer--because they can figure out a bunch of different calculations at the same time.