 The dynamics of a weakless universe includes a period of Big Bang nucleosynthesis, star formation, stars with sufficient fuel to burn for billions of years, stellar nuclear synthesis of heavy elements and also supernovae that distribute the heavy elements into the interstellar medium.The strength of the weak interaction is an outstanding problem in modern particle physics.A theory should ideally explain why the weak interaction is 32 orders of magnitude stronger than gravity; this is known as the hierarchy problem.