How simple it would be to unify physics if massless energy could create mass.
Imagine the big bang as quantum bubble spewing out fundamental energy particles that were massless.
Inflation would be no problem as they could quantum leap faster than light.
There would be no issue with gravity as it wouldn’t exist in a massless universe.
As the fundamental energy particles began to cool they would bond together to form sub atomic particles and then atoms.
Any fundamental energy particles that didn’t bond would form back ground radiation.
The atomic forces and speeds of electrons, protons and neutrons would create ‘motion mass’, this would facilitate gravity and stars could be born.
How simple it would be if mas was really ‘motion mass’, created from massless energy.