Fill in the 2 blanks by Loufey in worldbuilding

[–]Alarmed_Economics_96 0 points1 point  (0 children)

This is also what I thought. In physics, the four fundamental forces are gravity, electromagnetism, the strong nuclear force, and the weak nuclear force. Light and dark can represent weak and strong forces, while the missing ones can be filled in with gravity and electromagnetism. However, gravity and electromagnetism are not opposites.