The newest physics is even more pessimistic, putting it at O(m^½) because of the holographic principle.<p>Essentially, the theory goes that the amount of data you can cram into a spherical volume of space scales in proportion to its surface area, IIRC with a density on the order of bits per Planck area.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Bekenstein_bound" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Bekenstein_bound</a><p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Holographic_principle#Limit_on_information_density" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Holographic_principle#Limit_on...</a>