"If the universe (not in matters of space-time but in the context of scope) is truly infinite, and the true raw potential of everyone's imaginations are truly infinite (removal of environmental and other 'learned' limitations), then doesn't it stand to reason that anything (beings, places, times, etc) anyone has ever dreamed up, thought of, or in other ways created in their mind has to have existed, does exist, or will exist,
and if so, does that mean that everyone takes a part in 'helping' to keep the universe's scale infinite?" ~Mark Feldman
While speaking with a friend about this quote (mine from 8th grade), I argued that if the above statement were in fact true, there must be a planet (in fact an infinite number of them) that rains jellybeans. His response was (to paraphrase), "Although there may be an infinite number of planets, all of those planets would have to conform to the rules of physics that we know (and the ones we don't) about our own universe, thus no, you could never physically have a world whose rain is made of jellybeans."
An example he used to describe to me the difference of infinite sets was:
The set of all even numbers vs the set of all numbers or all odd numbers; all infinite, non equal.
While I understand his argument, I am still unsatisfied with this outcome. Both the physical limitation and infinite number set difference arguments, to me, fall short. They are each a linear set of infinity whereas I view true infinity to have an infinite number of planes, dimensions and directions to branch from. Basically, I say that the universe (the true sense of the bucket that everything fits into) would hold every possible outcome, even if the physical limitations of our 'universe' wouldn't allow it. Do my arguments hold water to philosophical logic? Does infinity (not numbers) truly mean the sum of all outcomes?
Again please keep in mind that although I use the word universe, I'm not talking about space or matter. I simply have not found a better term for what I'm implying.
The concept of infinity also extends to the multiverse hypothesis, which, when explained by astrophysicists such as Michio Kaku, posits that there are an infinite number and variety of universes. Source