On Saturday, June 26, 2021 at 6:16:06 PM UTC+2 [email protected] wrote:

>
> But the world is not stable. The universe looked very different 13 
> billion years ago than it does now because space is not only expanding, 
> it's accelerating; and Black Holes evaporate eventually, they are not 
> stable, and there are theoretical reasons to suspect protons are not stable 
> either, although that has never been experimentally verified.  
>

But the laws of physics are apparently the same as they were 13 billion 
years ago: law of gravity, quantum mechanics, constants of nature.

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