“Other than the laws of physics, rules have never really worked out for me.” -Craig Ferguson
When you think about the Standard Model of particle physics, you very likely think about all the matter, energy, particles, antiparticles, forces and interactions of the Universe. And you might legitimately worry that this is all there is.
Never fear; it can’t be! The Standard Model may be wonderful for what it does predict, but we know with absolute certainty that it can’t be everything.