Are all universes the same age in the Multiverse?

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Discussion Overview

The discussion revolves around the question of whether all universes in a potential multiverse are the same age. It explores theoretical implications, the nature of multiverse models, and the lack of empirical evidence for such concepts.

Discussion Character

  • Debate/contested, Theoretical exploration

Main Points Raised

  • Some participants suggest that if we are part of a multiverse, it is unlikely that every universe would be the same age.
  • Others argue that we currently have no evidence of a multiverse, and therefore, any claims about the ages of universes are speculative.
  • One participant notes that in models of eternal inflation, new universes are continuously formed, leading to a variety of ages among them.
  • Another participant emphasizes that the existence of other universes, if they exist, would be causally disconnected from ours, making it impossible to test any claims about their ages.
  • It is mentioned that multiverse models typically involve events that create "pocket universes," suggesting a diversity in their ages.

Areas of Agreement / Disagreement

Participants generally disagree on the question, with multiple competing views regarding the ages of universes in a multiverse and the implications of different multiverse models.

Contextual Notes

The discussion is limited by the absence of empirical evidence for a multiverse and the speculative nature of the claims made regarding the ages of potential universes.

Canada Bob
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If we are part of a Multiverse is it likely that every universe is the same age ?
 
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We have absolutely no idea. To the best of our knowledge, we have only a single universe. If evidence ever surfaces that we live in a multiverse we'll know more.
 
Since there is zero evidence that we are part of a multiverse, you can supply any answer you like.

Also, since other universes, even should they exist, are causally removed from ours there would be no way to test any answer, so again, you can supply any answer you like and no one can prove you wrong.
 
Depends on the version of multiverse. In eternal inflation new universes are formed continuously, so they come in a variety of ages: some brand spanking new and others literally older than dirt. I can't think of any version where they would all be the same age. It's a bit of a trick question - like what color is a pink fairy?
 
Canada Bob said:
If we are part of a Multiverse is it likely that every universe is the same age ?
In general, no. Multiverse models usually include events which birth "pocket universes" multiple times.
 

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