posted 3 Oct 2006 | Jordan Pollack
March 2006: Dear Jordan -- Until this process [invention in biological evolution] is demonstrated [in some medium], we can't be sure it works. Maybe what we are witnessing [on Earth] is not automatic design, but the installation, sorting out and optimization of existing programs. I know you think this is unlikely, but if it is even possible, your quoted words should be qualified. "Seems to have automatically designed...?" I am trying to establish a question -- Is Open-Ended Evolutionary Innovation in a Closed System possible?. I thought you agreed that it is a valid question. Yet your recent article treats it as invalid. ...Brig
Mindless Intelligence, by Jordan B. Pollack, p 50-56 v 21 n 3, IEEE Intelligent Systems, May/June, 2006.
Jordan Pollack replies: Evolution is accepted, unqualified by "seems". So is the equivalence of all computer programs to the set which runs on a universal turing machine - a finite state machine with unbounded memory. What I agree is lacking is a demonstration of a formally implemented artificial evolution on a utm which keeps developing....
Later: We agree that there has been no convincing formal/computational demonstration of OEE, despite a decade of my working on it. But I also know that it is "isomorphic" to AI, which has withstood 50 years of many brighter people than I, as well as million dollar chess prizes and turing test prizes.
I plan to keep working on my question, of finding the missing pieces in our explanations of self-organization in Nature (not only regarding Darwinism, but also symbiogenesis, non-linear dynamics, non-equilibrium chemistry, pattern generation, emergent layers and abstraction, etc).
I acknowledge your oft-stated question is not answered satisfactorily from a computational viewpoint. I but can't speak for what biologists or physicists think about the question, as they do not place much value on working computer models.
The question may still be asked in an incorrect way which doesn't enable a scientific process. Much of science progress seems to come from reframing questions in a way which allows testable questions whose answers inform that progress. I think that my framing intelligence as a result of a runaway complexity arms-race - equivalent to a 10 Billion line computer program which no human engineering team could engineer -- allowed me to work on OEE even as a member of the AI field. Working on coevolution for many years, subsequently let to my realizing that a previous answer - competition - as motivator in natural self-organization - was really a question. In particular, "closed system" might be expanded to mean "finite set of primitive elements combining" since the system is open both to incoming usable energy and to random fluctuations.
22 Sep: As I mentioned earlier, like Artificial Intelligence, ALIFE's possibility is "proven enough" by the biological example and the Church-Turing result on universal computation. ...Jordan
23 Sep 2006: Dear Jordan -- I admire your diligence on behalf of AI and related fields of interest. And I am grateful for your patience for my somewhat alien project. I will try to be brief.Yes, a formal/computational demonstration of Open-Ended Evolutionary Innovation in a genetically Closed System (OEEI/gCS) would be a huge breakthrough. However, the demonstration is lacking not only computer models, but also in biology. The apparent Open-Ended Evolutionary Innovation seen on Earth may actually be accomplished by the installation, sorting out and optimization of existing genetic programs in a genetically open system. You seem unwilling to admit that this alternative exists.
1. Are you unwilling? 2. Why? 3. Or if you are willing to admit the alternative, then do you see that the lack of a demonstration in any medium may be more than just a technical challenge? 4. Because, without a demonstration, how do we know if OEEI/gCS is possible?
Is it possible? The importance of the question seems obvious to me. However, I do not know how to go forward with it. That is why I am seeking the involvement of people like you, who might have suggestions, like your proposed expansion of my "closed system."
But I haven't really gotten to first base. First base would mean you agree that the question is unanswered, in biology or computer models. Second base would mean you agree that the question is important. Thanks again for your patience. Still at bat, Brig Klyce | Astrobiology Research Trust
30 Sep 2006: As you know, I don't think the biological example proves Open-Ended Evolutionary Innovation in genetically closed systems yet, because the biosphere is open to input from space, and the big bang is too remote to be conclusive. If you disagree, I am curious, why?
Mon, 2 Oct 2006 16:00:55 -0400: The logical problems in your thesis are too great. Life is arising out of macromolecular soup on earth, but random dust from outer space is what makes OEE possible? It is like the Clarke 2001 hypothesis that human evolution was triggered by an obelisk. Your idea of "open from space" affecting OEE theory in this context is like "a random number generator", as some science fiction presupposed AI would be impossible without "true randomness". Programs can be written and composed into bigger and bigger programs, and many alife systems inject pseudo-random objects into their simulations, but to presume the simulations wouldn't work without a more sophisticated input floating in from another simulation renders the questions unscientific. If the dust from space was of a higher complexity than the hierarchal self-assembling molecules on earth, it was point to a different planet where higher life evolved on the same chemistry. If not, they would not be able to invade and "colonize" Earth."
[WRT the Church-Turing result on universal computation] This is a rough idea: In early computer science, which was pure philosophy, at least 4 different abstract models arose: Turing's Machine, Church's Lambda Calculus (Lisp), Post's Production Systems (grammar) and recursive function theory, and register transfer systems (so-called Von Neumann machines). The questions which were hardest to answer was as to the set of effective calculations each could perform, and whether one model was more powerful than another, and whether a Turing Machine with an Infinite-state (e.g. ANALOG) automata was more powerful than the machine with a finite state machine, etc.
Eventually, it was proven by several people that all machines could run the exact same set of effective procedures, and that a Finite turing machine was the limit of power, since infinite memory would require infinite access time. In computer science, this is an accepted limit, like the speed of light, and claims of super-turing computing are considered fiction, like warp drive.
This model-equivalence gave everyone in cognitive science the confidence that whatever the brain is calculating, it is within the scope of what other universal machines could compute, brains are not magic or spirit based. My earlier point is that this theoretical certitude in AI expands to nearly everyone in ALIFE, that whatever biological systems are computing, they are not using magic....
12:37 PM 10/3/2006: Dear Jordan -- You have misunderstood me. You wrote: "Life is arising out of macromolecular soup on earth, but random dust from outer space is what makes OEE possible?" No. In the alternative I promote, life *arrives* from space and *nonrandom* genes from space make possible the apparent OEEI on Earth. At least get it right!You also wrote: "...But to presume the simulations wouldn't work without a more sophisticated input floating in from another simulation renders the questions unscientific." No. First, I simply observe that the simulations haven't worked. Then I describe a scenario in which they don't have to work. And in this scenario, genetic input does not come from "another simulation." I never said that. It may already exist in the environment, implausible as it may seem to you. If simulations ever work, I'll change my mind. You seem already sure that they will. Who's unscientific?
But my main frustration is that you sidestep my questions. I asked you to say whether you agreed that genetic input from elsewhere is even a possible source for the genetic programs that produce apparently new innovations on Earth. You have answered instead that you think the account is implausible. Meanwhile, the mainstream account of evolutionary innovation has no direct supporting evidence, in biology or computer models. It seems that the standard tactic (you're not the only one) is to ignore the difficulties and ridicule the alternatives.
Since this is so, perhaps I should spend more time explaining why [the strong version of] panspermia is not implausible. This would include evidence supporting biology in space, life on Mars, fossilzed germs in meteorites, etc. But the main thrust would be about evolution, and the building evidence for gene transfer as the source for new genetic programs, and why this fact already weakens the darwinian account. And I would show that the darwinian account for new genetic programs is hollow. Would your [regular discussion] group be interested in a presentation like this? (I'll have to learn PowerPoint.) What do you say?...Thanks Jordan. Thanks for all the info on Church-Turing....Best regards. Brig
Tue, 03 Oct 2006 15:06:05 -0400: I certainly mean no ridicule and apologize if it seemed that way. Maybe evolutionary biology suffers from a kind of religious persecution anxiety because of its origins as overturning long held religious conviction. Even symbiogenesis was apostosy and besides HGT violating the "germ cell exclusivity" there is also been discovered lamarkian inheritance of brain chemistry through the placenta. ...But you have to be pressed to say at what point in the fossil record does life arrive from elsewhere?
02:46 PM 10/3/2006: ...In panspermia, microbes are abundant in space and would therefore be arriving all the time, although perhaps more arrive when the comet traffic is heavier. Comet traffic may be cyclical, as when Earth passes through the plane of the galaxy or through a galactic shockwave arm. (But why do I have to be pressed? Darwinists are not pressed to say when, where or how life originated. They can simply say it must have.)
...We should be able to detect alien DNA in the environment which has yet to transfer as genetic input.
Right. please have a look at some of these stories I posted in the past year. Some of them pertain to genes already input, but also still found in lower forms that apparently do not need them.
http://www.panspermia.org/whatsne38.htm#050926
-- Common bacteria share an infinite gene pool?!