The Feynman's Sum Over History and the Path Integral

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Modern physics views the world as various types of fields, which vary continuously. That would be true if the world were described by a classical field theory but it is not. It is described as far as we know by quantum field theories. So you can't just think of it as smooth fields rather than ones that have discontinuities all over the place. And these ideas of continuity only make sense if you think that the field has definite values at different points in space; they don't.

Welcome to the June 2023 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patreons, whittle them down to a more manageable number -- based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good -- and sometimes group them together if they are about a similar topic. Enjoy!

Post with questions and full transcript: https://www.preposterousuniverse.com/podcast/2023/06/05/ama-june-2023/

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