A QUANTUM LEAP

In the everyday world you know what something is, where it has been and where it is going. Think of a tennis ball on the ground: you know that if you pick it up and let it go, it will fall to the ground and bounce back. In the quantum world, you have only probabilities: the probability that something will be here or there; the probability of whether it is a wave or particle, or whether it exists at all. If you let the tennis ball go, there is a probability that it will hit the ground or fly away; that it isn’t a tennis ball at all but the path of its movement, or that it just isn’t there. And neither are you.