Physics may not be entirely deterministic. At the quantum level physics starts being about probability. (In fact, quantum physics is all about probability, so

Physics may not be entirely deterministic. At the quantum level physics starts being about probability. (In fact, quantum physics is all about probability, something my grades wish I had understood while taking the course...) Maybe particles have free will: do I tunnel now or not? Not now, maybe later. Maybe the Heisenberg uncertainty principle is a reflection of the free will: you can determine either a particle's position or velocity as much as you want, but you give the particle an equal amount of free will to choose the other one.