Popular Science

Physicists break down the forces that drive the universe into four fundamental interactions. As I understand it, the strong force is what makes it so hard to get plastic five-gallon buckets apart while the weak force is all that’s keeping you from eating all the cookies. A third force, the electromagnetic interaction, only occurs when a grade school teacher has you wrap wire around a nail. Under no other conditions is this force to be observed in day-to-day life. The fourth force, gravity, is when you try to keep a straight face while somebody explains their paleo diet to you.