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Does Infinity Really Exist?
A thought popped into my mind the other day: Is the universe infinite in any way?
Think about it for a second: within our universe, there is a minimum size something can be (Planck length), a minimum time that something can take to occur (Planck time), and a maximum speed that something can travel. I do understand that smaller sizes and time-frames exist, but they mean nothing within the causality and reality of the universe. So our universe is discrete at its lowest levels.
Furthermore, (if we are to believe mainstream fizzix), everything began a finite time ago, as a finite size. So, if size, time and velocity must be discrete, then there's nothing infinite in the equation. The implications of this are boggling. For example, this means one Planck-time moment in our universe can be defined and classified, given enough time. If this is so, then all moments in the history of our universe can be rounded up and classified. And because of this, our universe and any other would have a finite description. Therefore, there cannot be infinite unique universes.
And, if the universe is deterministic, we don't even need to measure all these moments; just the first one. But I'm getting ahead of myself and digressing.
Unless I'm missing something, this universe is not infinite. Unimaginably large, yes, but not infinite.
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War doesn't decide who's right, only who's left.
-Mark Twain
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