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A von Neumann probe is a self-replicating spacecraft designed to investigate its target system and transmit information about it back to its system of origin.[6] The concept is named after Hungarian American mathematician and physicist John von Neumann, who rigorously studied the concept of self-replicating machines that he called "Universal Assemblers" and which are often referred to as "von Neumann machines". While von Neumann never applied his work to the idea of spacecraft, theoreticians since then have done so.
If a self-replicating probe finds evidence of primitive life (or a primitive, low level culture) it might be programmed to lie dormant, silently observe, attempt to make contact (this variant is known as a Bracewell probe), or even interfere with or guide the evolution of life in some way.
... BRACEWELL PROBE ...
A Bracewell probe would be constructed as an autonomous robotic interstellar space probe with a high level of artificial intelligence, and all relevant information that its home civilization might wish to communicate to another culture. It would seek out technological civilizations — or alternatively monitor worlds where there is a likelihood of technological civilizations arising — and communicate over "short" distances (compared to the interstellar distances between inhabited worlds) once it discovered a civilization that meets its contact criteria. It would make its presence known, carry out a dialogue with the contacted culture, and presumably communicate the results of its encounter to its place of origin. In essence, such probes would act as an autonomous local representative of their home civilization and would act as the point of contact between the cultures.
Originally posted by ELECTRICkoolaidZOMBIEtest
my only qualm with this (playing devils advocate and agreeing that aliens are real) is that UFOs tend to be pretty big for just probes
Originally posted by trace_the_truth
Originally posted by ELECTRICkoolaidZOMBIEtest
my only qualm with this (playing devils advocate and agreeing that aliens are real) is that UFOs tend to be pretty big for just probes
That could be true if the whole reason is not to be noticed. With all of the abduction stories, it seems to be logical that they would create probes that are large enough to be familiar to humans. This would include being large enough to have rooms, human accustomed sized controls and other environmental objects that we would immediately recognize like tables, lights, ect...
Originally posted by ELECTRICkoolaidZOMBIEtest
Originally posted by trace_the_truth
Originally posted by ELECTRICkoolaidZOMBIEtest
my only qualm with this (playing devils advocate and agreeing that aliens are real) is that UFOs tend to be pretty big for just probes
That could be true if the whole reason is not to be noticed. With all of the abduction stories, it seems to be logical that they would create probes that are large enough to be familiar to humans. This would include being large enough to have rooms, human accustomed sized controls and other environmental objects that we would immediately recognize like tables, lights, ect...
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maybe most UFOs are probes and the abductions are done by actual alien spaceships that have traveled here. maybe they have a base of operations closer to home where the probes get sent from and where the spaceships return to between abducting people.
Originally posted by jokei
Cool thread, where'd you get your information from? It's a really interesting idea and would seem to make more sense from an exploration point of view, probably economic/resources-wise.
S&F
How a von Neumann probe might work
Boyce, in his book, envisaged the following scenario. Initially, a von Neumann probe, consisting of an interstellar propulsion system and a universal von Neumann replicator with human-level intelligence, would be launched from the home star toward a neighboring stellar system. Upon arrival it would seek out raw materials, from local sources such as asteroids, and use these to make several copies of itself (including its rocket engines). The copies would then be launched at the next set of neighboring stars. This process would be repeated, over and over again, so that increasing numbers of identical probes would be involved in penetrating ever more remote regions of the Galaxy.
Having dispatched copies of itself, a probe would begin to explore the star system in which it found itself. It would conduct scientific research and transmit the results back to the point of origin. It could also be used as a means of interstellar colonization by constructing an artificial life-sustaining environment and then implanting this with synthesized fertile egg-cells bearing genomes transcribed from the probe's computer memory. Eiseley has suggested that the embryonic individuals of such a colony could be tended by robots, also built by the probe, until they were old enough to function independently. They would then be free to develop their own civilization around the host star.
The great advantage of a von Neumann probe is that, being a universal machine, it can be used for any purpose at its target system depending on the instructions sent out to it from its ultimate creators. Consequently, as the creators made technological advances at home they could reprogram a remote von Neumann probe, for example, to build faster rocket engines for the next generation of probes or more sensitive sensing equipment with which to study its host stellar system. How rapidly the Galaxy could be completely explored and colonized in this way depends on several factors, including the interstellar transit times of the probes (see interstellar travel), the speed at which they reproduce and carry out other tasks within the host systems, and the specific strategy used for interstellar colonization.
Originally posted by ArMaP
The general idea is a good one, but once you started talking about crop circles being used as a way of communicating with humans you spoilt it all, at least for me, not because I think that crop circles are human creations (and I really do think that) but because, as a way of communicating something, they have been proved useless, nobody has the faintest idea of what they mean.
Originally posted by ELECTRICkoolaidZOMBIEtest
my only qualm with this (playing devils advocate and agreeing that aliens are real) is that UFOs tend to be pretty big for just probes
Originally posted by ArMaP
reply to post by ArMaP
Communication through mystery?
Unless the idea is not to be understood, but that way I don't call that communication, just teasing.
And, as I said before, I don't think crop circles are related to the presence of extra-terrestrial life forms (or even AI probes), so it's a little difficult for me to follow that "crop circle connection" possibility.