Not only are we made of fundamental particles, we also produce them and are constantly bombarded by them throughout the day. Fourteen billion years ago, when the hot, dense speck that was our universe quickly expanded, all of the matter and antimatter that existed should have annihilated and left us nothing but energy.
And yet, a small amount of matter survived. We ended up with a world filled with particles. Particles whose masses and charges were just precise enough to allow human life.
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