There are two kinds of infinity that are relevant. The countable infinity of the integers and the uncountable infinity, which is bigger. But we don't have any experiment that would actually distinguish between a theory involving countable numbers versus a uncountable continuum. Does the world really involve different kinds of infinities? There's no super strong evidence.
Welcome to the April 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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