In 1980, the idea of a quantum processing unit was proposed. Such a processing unit doesn’t use the 1s and 0s with which we’re familiar. That “classical” way of thinking is the way we think, with a 1 for true and a 0 for false, and combinations—for example, a “false positive.” Quantum computing is based on a “superposition” of states called “quantum bits” or “qubits” for short. But there’s a big difference between the way we think and the way nature behaves.