[ExI] A new answer to the Fermi paradox?

[Jason Resch]

On Sat, Jul 18, 2026, 7:33 AM John Clark <johnkclark at gmail.com> wrote:

> On Fri, Jul 17, 2026 at 1:23 PM Jason Resch via extropy-chat <
> extropy-chat at lists.extropy.org> wrote:
>
> *> On long enough time horizons, the universe cools to a temperature far
>> lower than the hawking temperature of even galactic center black holes, and
>> black holes convert their entire rest mass to energy.*
>
>
> *A super massive Black Hole like the one at the center of our galaxy will
> decay in about 10^100 years because of Hawking radiation, but there are
> theoretical reasons for believing that, given enough time, a proton is not
> stable and its half life is about 10^34 years, which is VASTLY less than
> 10^100. A proton will decay into a positron and a neutral pion, which
> itself will almost immediately decay into 2 gamma ray photons and a
> neutrino. *
>

I don't think there's strong evidence for proton instability. But should
that be the case, we can use either smaller black holes, or perhaps future
engineers will develop computers not based on atoms as we know them.



> *So by the time all Black Holes evaporate the universe will consist of
> nothing but photons, neutrinos, gravitational waves, and electrons and
> positrons which could pair up into positronium atoms but, assuming that
> Dark Energy is constant, by then the density of those charged particles
> would be so low that the radius of one of  those "atoms" would be larger
> than the observable universe is today. And eventually even those charged
> particles would annihilate each other and turn into photons and neutrinos
> due to weak interactions, although that would take about 10^141 years.*
>
> *> Computations become many orders of magnitude more efficient at these
>> low temperatures operating at slow speeds*
>
>
> *We don't know if Dark Energy is constant so we don't know if the universe
> will ever reach these super low temperatures, and even if they do there is
> no reason for not doing some computations right now.*
>

No one is saying we can't do some computations now. They're only saying:
don't exhaust all energy sources now because it's wasteful and the price of
expending energy now is comparatively much greater.


* There is no reason to let the low entropy light from a quadrillion suns
> radiate uselessly into infinite space.*
>

It's the equivalent of picking up pennies in front of a steam roller. You
say this is vast energy being wasted by not building Dyson swarms now, but
it amounts to just 1/10,000th of the energy of the star. Meanwhile you
dismiss the potential 10^30 X benefit of saving energy for the future.

*There is no reason for not converting a low entropy photon into a high
> entropy photon PLUS A CALCULATION, before it is released into infinite
> space.*
>

Read the link I sent and you will see that this too is mere pennies
compared to the future bounty that becomes possible later, and also
consider the difficulty of preserving this vast memory resovoir over
trillions of years in a comparatively much hotter and active universe.

Jason

>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.extropy.org/pipermail/extropy-chat/attachments/20260718/978a4206/attachment.htm>