Replicators
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14-05-2013, 09:34 AM
RE: Replicators
(13-05-2013 11:21 AM)yumeji Wrote:  I saw the title of this thread and my mind went straight to Star Trek The Next Generation.

How awesome today would be if those kind of replicators turned out to be possible...

That was why I opened the thread.

Back to OP. I loved the movie Stargate.

The TV show....Honestly not so much. My husband watched the whole thing on Netflix.


God is a concept by which we measure our pain -- John Lennon

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15-05-2013, 11:11 AM
RE: Replicators
(14-05-2013 09:34 AM)Momsurroundedbyboys Wrote:  
(13-05-2013 11:21 AM)yumeji Wrote:  I saw the title of this thread and my mind went straight to Star Trek The Next Generation.

How awesome today would be if those kind of replicators turned out to be possible...

That was why I opened the thread.

Back to OP. I loved the movie Stargate.

The TV show....Honestly not so much. My husband watched the whole thing on Netflix.
I loved the movie also which I saw on Netflix so then I too watched the whole TV series on Netflix. I really enjoyed it, but there were some episodes that weren't all that great.

"Religion has caused more misery to all of mankind in every stage of human history than any other single idea." --Madalyn Murray O'Hair
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15-05-2013, 11:18 AM
RE: Replicators
the day the earth stood still did that very idea, the new version that is. where these bugbots took everything apart. that would be the only instance where it would "worry" me. that is an alien race who wanted our cookies and used it to get rid of us. i personally think nanotech may be the mode of our "immortality". if the nanobytes pick up where our proteins leave off, who knows how long we can live. just a theory

something cliche about stuffEvil_monster
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19-05-2013, 02:28 AM
RE: Replicators
The idea of reproducing machines is fairly old and comes under the term Von Neumann Machines. The main idea was to build space probes that would be able to reproduce at their destination and send kids on to further explore. According to early calculations it would only take half a million years or so for the entire galaxy to be explored by launching one or two such space probes. That leads to the question "so where are they?". David Brinn offered an engaging answer in (for me an unfortunately dull) science fiction book, Existence.

When you think about it bacteria are small replicators. Their existance leads me to think the "grey goo" Blood Music style scenario is not very credible. But who knows?
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19-05-2013, 03:29 AM
Bug RE: Replicators
Nanobots/replicators/grey goo would be my favourite scifi doomsday scenario, and piece of scifi.

QUESTION: Are there are science discussion articles (similar to xkcd's "What If?) that goes into detail about the grey goo scenario?

Example. If replicators spread over a planet, how thick would the "replicator layer" be before the weight would completely crush the bots that were at the bottom?

Would the surviving top layer of replicators just continuously consume the crushed replicators at the bottom? Continuing an endless cycle of consumption, procreation, death, and consumption again. But since matter is transformed into energy, and heat, eventually there will be a point where material will be used up and the replicators will get closer to the planet core. -Would they just all sink and melt?

How much error (mutations) would be allowed in their replications? Would the replicators be able to branch off and evolve to survive certain environments? Say extreme heat or pressure - being able to consume suns? Or to evolve in a certain way to flow and gyrate in a certain way to spin and fling off while in space. In order to spread instead of being stuck in a single gravity well (say, after consuming a planet).
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19-05-2013, 06:51 AM
RE: Replicators
(19-05-2013 03:29 AM)PoolBoyG Wrote:  Nanobots/replicators/grey goo would be my favourite scifi doomsday scenario, and piece of scifi.

QUESTION: Are there are science discussion articles (similar to xkcd's "What If?) that goes into detail about the grey goo scenario?

Example. If replicators spread over a planet, how thick would the "replicator layer" be before the weight would completely crush the bots that were at the bottom?

Would the surviving top layer of replicators just continuously consume the crushed replicators at the bottom? Continuing an endless cycle of consumption, procreation, death, and consumption again. But since matter is transformed into energy, and heat, eventually there will be a point where material will be used up and the replicators will get closer to the planet core. -Would they just all sink and melt?

How much error (mutations) would be allowed in their replications? Would the replicators be able to branch off and evolve to survive certain environments? Say extreme heat or pressure - being able to consume suns? Or to evolve in a certain way to flow and gyrate in a certain way to spin and fling off while in space. In order to spread instead of being stuck in a single gravity well (say, after consuming a planet).

The problems you pose are solved by existing life on Earth. The grey goo version would have to be able to do what plants do and efficiently pull in solar energy and perhaps utilise wind, tidal and geo thermal. To do that and not die out itself it would need to efficiently organise itself into specialised types. Imagine human civilisation but small. That means it would have to have ways to police the integration and manage mutation, but not prevent it since that is how it would infiltrate new niches.

To keep itself chemically stable it might need to divide into cells, just like those used by living things. It does not, however have to be limited to bilipid membranes. It could use more exotic forms. However there is an energy level and material level limitation. To increase its mass it would need to become space faring and trap the materials in orbit about the sun as well as building itself into something like a living Dyson Sphere.

A sciencefiction story that explores some of this is Bloom.

You can find an interesting scholarly essay about it on Ray Kurzweil's site. Beware, some crackpottiness over there. Check facts. Count fingers.
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