On Tue, Jun 21, 2011 at 1:23 PM, meekerdb <meeke...@verizon.net> wrote:

> On 6/21/2011 9:56 AM, Rex Allen wrote:
>> And that we start spreading throughout the galaxy, leaping from solar
>> system to solar system.
> If any intelligent species spreads through the galaxy, it isn't going to be
> human.  Human life spans are much to short.  I recommend my friend Lawrence
> Crowell's book "Can Star Systems be Explored?"
> Brent

Humans as we know them now will likely not explore the galaxy, but nothing
prevents human intelligence from exploring the galaxy.  In the next 30 years
the equivalent of the average USB stick will have enough memory to store a
digital representation of your brain.  A processor made of carbon nanotubes
that is 1 inch cube could have enough processing power to emulate an entire
city worth of humans (100 thousand to 100 million):


This is how humanity will explore space, should we survive to that stage, no
in our frail bodies with all their demands for food, recreation, living
spaces, air, waste processing, sickness, radiation protection, high
pressured atmosphere, and so on.  Instead of having to construct a gigantic
vessel to house the hydroponics and living spaces for millions of people,
and all the thick radiation blocking walls surrounding such a massive
structure, we could fit a million people in the size of a space shuttle, and
the only requirements of that  would be energy production which could be met
by a nuclear reactor.

Living in simulated realities of their choosing, people would not be bored
or run out of things to do, many might forget altogether the fact that they
are on a space ship.  It would also enable them to live for long enough
periods to travel interstellar distances.


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