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Advancement

 
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jabailo



Joined: 20 Mar 2006
Posts: 1273
Location: Kent (East Hill), WA

PostPosted: Mon Dec 22, 2008 9:49 pm    Post subject: Advancement Reply with quote

The human brain may at the very least be a quantum machine and possibly more.

Unless you create a machine that is quantum and possibly more, you have not advanced the intellect.



The planet Earth is a spaceship that can sustain up to 6 billion people in a civilized form for at least 4000 years.

Unless you can build a spacecraft that travels the galaxy as far, as fast and with as much comfort, you have not advanced space travel.
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jabailo



Joined: 20 Mar 2006
Posts: 1273
Location: Kent (East Hill), WA

PostPosted: Fri Feb 05, 2010 8:52 pm    Post subject: Reply with quote

Another thought on "space ships".

What if instead we made space buoys?

Instead of launching an object to go to somewhere, we simply let it stay where it was when the Earth was there initially.

So, no using up precious fuel, we would have to slow it down to zero and let it sit there, waiting for the next object in the galactic spiral to come whizzing by...
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brian-hansen
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Joined: 17 Mar 2006
Posts: 712
Location: Oregon

PostPosted: Sat Feb 06, 2010 4:11 pm    Post subject: Space Buoys Reply with quote

Nice try, but I think you missed the hoop entirely with that shot.

The Earth and Sun are gravity wells that keep all nearby objects
within their context, or sphere of influence. One would have to
escape the gravity well in order to be able to drift in our wake.

I have to admit, the idea is appealing though.

It reminds me of some thoughts I have about a specific
scenario regarding time travel. Most stories involving
time travel include the idea that the location of travel
is fixed, while time varies. I like to call it "the geocentric
assumption". From a hand-waving perspective (and few
explanations for time travel are otherwise), this seems like
a fairly plausible idea. After all, since Einstein, gravity, space
and time have all been linked. On the other hand, when the
equations describing time travel are derived, gravity might
well cancel out. Even more likely, gravity might be a factor,
but, as it is in other respects, a very "weak" force compared
to the other known forces - so a very small factor.

If gravity were not a factor, or a very weak factor, then time
travel would tend to not be geocentric in nature. The Earth
and Sun would not be favored frames of reference for
determining the location in space while traveling through time.

I guess I could imagine some special frame of reference,
a temporal relative of what they once called "flux", or "ether",
the theory being that the earth traveled through a directional
field. However, in the absence of such a special frame of
reference, the most natural frame of reference one would take
would be that of the universe itself.

So, if you went back one hour in time, you'd be in the place
you were one hour ago. It turns out, that this is quite far
away. I'll save the calculations of where you'd be for another
time. If time travel worked this way, one would need to make
extensive preparations to avoid being exposed to the vacuum
of space or materializing in solid rock.

One could, however, launch buoys, as you mention.
Unfortunately, these would tend to fall pretty immediately
into the nearest / strongest gravity well, since they would
not have a "velocity" needed to maintain orbit, let alone
escape it.

Ramp up the effect, though, and it's possible, to visit neighbors,
um, neighboring solar systems, who are just now reaching
a point in space that is where we were, some time ago.
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jabailo



Joined: 20 Mar 2006
Posts: 1273
Location: Kent (East Hill), WA

PostPosted: Sun Feb 07, 2010 3:27 pm    Post subject: Reply with quote

Hilarious and yet pungently true!

This goes back to an idea I posted that there is no time, only position.

All "time" counters are just things that move.

A clock. A cesium atom.

So we say velocity is ds/dt

But what is dt? dt = ds(2)

I look at a clock. I record the position of the hands.
I take a walk. I record the position of the hands.

So, I'm comparing relative motion...not "time".


Another thought. We live with the past. We have museums. We have recordings.

Take a DVD (or a hologram). It recorded past events. If I were to "scratch" the DVD I will have "changed history". Even more so, if I edit a video file, I can also "change history". So, the past is etched on the present.

Take a building. First the foundation is laid, then the superstructure, then the walls, floors, rooves.

Now the building is built.

Now I take away a supporting beam and the building falls.

Is this like going back "in time" and shooting someone's grandfather? I take away an "apriori" fact that allows something to exist.

Suppose I become the perfect cat burgler and sneak into the National Archives and edit the Constitution. I say that Church and State should be merged, not separate. I "time travelled". I changed "the past" and thus I change the future. Suddenly the Pope becomes President.
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