Drawing heavily from the insights of Nobel laureate in his celebrated book Facts and Mysteries in Elementary Particle Physics , we can explore the subatomic world through a unique lens: one that separates what we experimentally know for certain (facts) from the profound gaps in our understanding (mysteries). The "Actors" and the "Stage"

Veltman famously describes physics as a play where are the actors and the laws of quantum mechanics and relativity form the stage.

Mediate the fundamental forces (electromagnetism, weak, and strong). Provides the mechanism for mass. The Persistent Mysteries

While the Standard Model is incredibly robust, Veltman and contemporary physicists point to several "mysteries" that suggest we are missing a larger piece of the puzzle: Facts and Mysteries in Elementary Particle Physics