Could Evil Parallel Universes Really Exist?

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The discussion centers on the concept of parallel universes and the possibility of an "evil" universe existing alongside our own. While some argue that if parallel universes exist, then a universe with entirely evil characteristics could also exist, others emphasize that "evil" and "good" are not scientific terms and that there is currently no evidence for alternate universes. The multiverse theory, particularly M-theory, suggests an infinite number of universes with varying physical laws, implying that every conceivable universe, including those with opposite moral frameworks, could exist. However, the conversation highlights the distinction between philosophical speculation and scientific inquiry, noting that this topic remains largely theoretical. Ultimately, while the idea of evil parallel universes is intriguing, it is not grounded in established scientific evidence.
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If there are parallel universes then there must be an existence where everything is towards evil, rather than good and the norm is juxtaposed? Pls explain?
 
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jaykay000 said:
If there are parallel universes then there must be an existence where everything is towards evil, rather than good and the norm is juxtaposed? Pls explain?

"Evil" and "good" are not physics terms (they're not even scientific terms, at least not in the natural sciences). So, I am sorry, your question is not a physics question :wink:.
 
that's a BIG "if". There is absolutely no evidence for alternate universes. If you are interested in science, I suggest that you study some science. If your interest is philosophy or metaphysics, this forum will not be much help to you.
 
jaykay000 said:
If there are parallel universes then there must be an existence where everything is towards evil, rather than good and the norm is juxtaposed? Pls explain?

If there are an infinite number of universe, such as in the multiverse of M-theory, then there will indeed be universes like you suggested. In the multiverse model, universes of every possible kind will exist (providing the laws of physics of that particular universe can themselves be achieved) - because M-theory allows for universes with different physical constants to our own. According to M-theory, something like 10^500 universes with different physical laws are possible.

If the multiverse exists, at least with the M-theory version, the universes you refer to as being 'parallel' won't share similarities with our universe due to an intrinsic connection, but rather because the multiverse allows for an infinite number of universes, and therefore an infinite number of possibilities. So no matter how low the probability of another universe being atom to atom identical to ours, or the exact opposite, it is inevitable to occur. And with an infinite number of universes in the multiverse, every possible universe will occur an infinite number of times.

Very interesting stuff, but it's important not to get caught up in this, while it is extremely mind blowing and exciting to ponder on it, there is a long way to go before anything is set in concrete. :-p
 
This isn't science.
 
https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
Why was the Hubble constant assumed to be decreasing and slowing down (decelerating) the expansion rate of the Universe, while at the same time Dark Energy is presumably accelerating the expansion? And to thicken the plot. recent news from NASA indicates that the Hubble constant is now increasing. Can you clarify this enigma? Also., if the Hubble constant eventually decreases, why is there a lower limit to its value?
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