4 ms·
> If the universe were similarly segmented, then there would be a limit to the amount of information space-time could contain. I thought there is a limit to th
by qrendel 11y ago
> If the universe were similarly segmented, then there would be a limit to the amount of information space-time could contain.
I thought there is a limit to the amount of information spacetime can contain: the Bekenstein bound[1], and its variations[2]. Though it's related to the surface area bounding the region, and not the volume enclosed itself. For a spherical cubic cm, about 10^66 bits, iirc.
[1] https://en.wikipedia.org/wiki/Bekenstein_bound https://en.wikipedia.org/wiki/Bekenstein_bound
[2] http://www.scholarpedia.org/article/Bekenstein_bound http://www.scholarpedia.org/article/Bekenstein_bound
- lpage 11y agoI'm wondering about that as well. The closely related covariant entropy bound is predicated on both the holographic principle and our current understanding of quantum gravity, so I'm not sure if this finding calls that into question or not. There was a good HN discussion on the theoretical limits of information density a few years ago: https://news.ycombinator.com/item?id=6466430 https://news.ycombinator.com/item?id=6466430