The real world almost never has wave packets freely moving in empty space. The wave packet idea is a convenient fiction for quantum field theorists. David Maxwell says, imagine you wake up tomorrow and you're 40 light-years from Earth with ready access to the entirety of human writings,. medical technology that will keep you alive to 120, and the ability to send messages back to Earth with no faster than light trickery.
Welcome to the March 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!
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