In most circumstances, two left-handed fermions interact more strongly than right-handed or opposite-handed fermions impling that the universe has a preference for left-handed chirality, which violates a symmetry of the other forces of nature.
Two left-handed fermions interact more strongly than right-handed or opposite-handed fermions impling that the universe has a preference for left-handed chirality. This was in most circumstances. Chirality violates a symmetry of the other forces of nature.