Rayne: So what are you reading? Rayne: Quantum Mechanics? Rayne: Are you a robot? Glasses Girl: The Paradox of time and Causality in Quantum Mechanics Glasses Girl: Yes, it basically employs principles of probability and uncertainty. A complex wave function is calculated for the behaviour of particles in a region of space-time, which consists of a superposition of overlapping waves representing all possibilities.  Glasses Girl: No