But life is different. And quantum mechanics is so strange that even he could never accept its implications. In quantum mechanics, everything that can happen will happen. When an electron or proton is placed at a crossroads where it can travel to the right or to the left, it goes both ways. Physicists don't understand quantum mechanics.
Nobody can agree on what it really means for our view of reality.
In others, signals travel backward in time to connect every particle in the universe. Quantum mechanics rules the dynamics of electrons, protons and other fundamental particles. But it has come as a surprise to many scientists that it also holds sway over bigger systems. Few physicists doubt that as the technology advances, bigger and more complex systems will be shown to inhabit the quantum world. Fullerene molecules have a diameter similar to that of the DNA double helix.