The fundamental laws of physics are time-symmetric, but our macroscopic
experience contradicts this. The time reversibility paradox is partly a
consequence of the unpredictability of Newton’s equations of motion. We measure
the dependence of the fraction of irreversible, gravitational N-body systems on
numerical precision and find that it scales as a power law. The stochastic wave
packet reduction postulate then introduces fundamental uncertainties in the
Cartesian phase space coordinates that propagate through classical three-body
dynamics to macroscopic scales within the triple’s lifetime. The spontaneous
collapse of the wave function then drives the global chaotic behavior of the
Universe through the superposition of triple systems (and probably multi-body
systems). The paradox of infinitesimal granularity then arises from the
superposition principle, which states that any multi-body system is composed of
an ensemble of three-body problems.
