I&#x27;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&#x27;m not sure if this finding calls that into question or not.<p>There was a good HN discussion on the theoretical limits of information density a few years ago: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=6466430" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=6466430</a>