• Fact vs. Theory vs. Hypothesis vs. Law… EXPLAINED!
    Articles,  Blog

    Fact vs. Theory vs. Hypothesis vs. Law… EXPLAINED!

    [MUSIC] We need to get something straight. Evolution by natural selection is a theory. So is climate change. But people keep saying that like it’s a bad thing… [MUSIC] I get it, I understand your frustration. We’re all searching for ultimate hashtag #truth, and complex, challenging ideas don’t always fit nice and neatly in our brains. But what is truth? Are there different levels of truth? Are some truths truthier than others? I don’t know. But I do know this: Science is the absolute best tool we have for understanding how the universe works, and theory is not a 4-letter word. If we’re going to trust science together, the least…

  • Solving the Impossible in Quantum Field Theory | Space Time
    Articles,  Blog

    Solving the Impossible in Quantum Field Theory | Space Time

    [MUSIC PLAYING] HOST: This episode is supported by Curiosity Stream. Quantum field theory is stunningly successful at describing the smallest scales of reality, but its equations are also stunningly complex. A lot of the genius in QFT’s development was in finding brilliant hacks to make these equations workable. The most famous of these are the incredible Feynman diagrams. [MUSIC PLAYING] The equations of quantum field theory allow us to calculate the behavior of subatomic particles by expressing them as vibrations in quantum fields. But even the most elegant and complete formulations of quantum field theory, like the Dirac equation or Feynman’s path integral, become impossibly complicated when we try to…