Full Idea
Particles with half-integer spin, such as electrons, protons or quarks (all spin ½) have an asymmetry in their wavefunction that makes them antisocial. These particles (Fermions) cannot share a quantum state.
Gist of Idea
Fermions, with spin ½, are antisocial, and cannot share quantum states
Source
New Scientist writers (Why the Universe Exists [2017], 02)
Book Reference
New Scientist writers: 'Why the Universe Exists' [John Murray 2017], p.31
A Reaction
This is said to explain the complexity of matter, with carbon an especially good example.