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Matter vs. Force: Why There Are Two Types of Particles
- throwawayffffas 1y agotldr: integer vs half integer spin. Fun fact, matter can actually have integer spin as well. For example Helium-4 has integer spin, -1/2 + -1/2 + 1/2 + 1/2 for a total of zero. And that's why it can act like a superfluid.