[ExI] immortal

[Jason Resch]

On Sun, Aug 3, 2025, 3:21 PM Adrian Tymes via extropy-chat <
extropy-chat at lists.extropy.org> wrote:

> On Sun, Aug 3, 2025 at 1:35 PM Jason Resch via extropy-chat
> <extropy-chat at lists.extropy.org> wrote:
> > we should reach the best physically possible technology within 200 years
> at current rates
>
> I see no possible justification for that claim.  The best physically
> possible technology is, by definition, unknown until we possess it.
>

Physical constants provide right upper bounds on the best physically
possible computers. Knowing just a few physical constants we can calculate
the most efficient possible computers (Landauer's principle), the fastest
possible computers (Bremermann's limit), and the best data storage density
(the Bekenstein bound).

Currently we're off from Bremermann's limit by a factor of about 10^34. Or
2^112. So it will take another 112 doublings of current computer speed to
get there. Over the past century the trend has been fairly consistent of
computing technology doubling roughly every 18 - 24 months, so that puts us
between 173 and 224 years away from that point.

See:
https://arxiv.org/abs/quant-ph/9908043
https://en.wikipedia.org/wiki/Landauer%27s_principle
https://en.wikipedia.org/wiki/Bremermann%27s_limit
https://en.wikipedia.org/wiki/Bekenstein_bound

Jason
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.extropy.org/pipermail/extropy-chat/attachments/20250803/efcf7492/attachment-0001.htm>