The more physicists discover about our universe, the weirder it seems. Electrons don't orbit an atomic nucleus like planets orbiting a star: they exist everywhere at once within a shell of probability. And when the electrons change their energy state, they are first at one state and then at another--but they are never in between. How weird is that?
And since we are made of atoms, it seems to follow that humans (and everything else composed of regular matter) are also probabilistic at their core.
Think about that.