Showing posts with label artificial intelligence. Show all posts
Showing posts with label artificial intelligence. Show all posts

Monday, 30 May 2011

Skepticule Record: Dr. Paul Curzon at Portsmouth Skeptics in the Pub

Dr. Paul Curzon's talk on artificial intelligence on 12 May (the second talk of the evening) included several demonstrations requiring audience participation. He concluded with some conjuring to illustrate his own research into the "human-computer interface".

Audio is available in the Skepticule Record podcast feed here:
http://www.skepticule.co.uk/2011/05/skeprec-003-20110512.html

(A new Skepticule Extra episode will be available shortly.)

Saturday, 30 April 2011

Phillip E. Johnson — father of ID — lax, unpersuasive and simply wrong

I'm now up to chapter 13 of Dembski & Licona's Evidence for God, which is approximately one-eighth of the way through its "50 Arguments for Faith from the Bible, History, Philosophy, and Science". As I feared, it's proving a tedious affair. Given that this is a recent book I'd hoped it might contain some really good up-to-date arguments, or at least a challenge of some sort. So far, however, it's been disappointing. The first section, The Question of Philosophy, should have been challenging, but seems to comprise what I (a non-philosopher) can only describe as philosophically bankrupt arguments. The current section, The Question of Science, appears to be all over the place; some of its chapters don't offer an argument at all, so I fail to see how they count towards the "50 Arguments".

Nor do I understand why every one of the first 13 chapters is either identical or very similar to an article on 4truth.net. That website doesn't reference the book, and the book only briefly references the website (in the introduction) as a place to find "still more articles". Shouldn't there be at least an acknowledgement that the book contains reprints? Or that the website does? (At this stage I'll not be surprised to discover that the whole book is available on the website, which could explain why there's nothing new.)

Curious though that is, what of chapter 13? It's titled "Darwin's Battleship — Status Report on the Leaks This Ship Has Sprung" and is by Discovery Institute co-founder and major intelligent design proponent Phillip E. Johnson. He begins by citing his 1993 book Darwin on Trial, quoting the epilogue in which he predicts that ID will win out over evolution. He then goes on to list how he perceives progress in this regard. It's actually a bit comical:
Science organizations regularly mischaracterize ID, calling it "creationism in a cheap tuxedo." They dream up conspiracies and make false accusations. They try to make sure that no one who is friendly to ID is allowed to publish articles in the peer-reviewed literature and then use the lack of such articles to prove that ID is not science. They try to prevent ID-friendly scientists from attaining research or teaching positions. They enter into local school district decision-making processes to make sure that Darwinism is not allowed to be questioned in any way, bringing in the ACLU if there is any attempt to offer an even-handed approach to the teaching of evolution. (p. 74)
Who's "dreaming up conspiracies and making false accusations" here? I seem to remember a somewhat disreputable film (that's putting it mildly) called Expelled: No Intelligence Allowed that was chock-full of conspiracy theories, every one of which was promptly debunked by people who actually investigated the facts.

Johnson goes on to state that the "Darwinian mechanism of evolution" has no explanation of how the complex living world came about. This is just plain false. Anyone who reads Richard Dawkins' latest, beautifully illustrated book, The Greatest Show on Earth, cannot fail to understand the stunning simplicity and elegance of Darwin's idea. As for explaining "how life came into being from chemicals" — Johnson must surely know that evolutionary theory has practically nothing to say on the subject because that's not what it's about. He complains that Edward O. Wilson gives no concrete examples of evolution in an article in Harvard magazine, while providing no examples himself — nor does he provide a reference to Wilson's article. In fact the only reference Johnson gives is to his own book. His final paragraph is telling:
Recently, Harvard opened a new major research project, especially to study the origin of life. This may be in response to the criticisms of the Intelligent Design movement. Other recent articles suggest that scientists in the biological establishment are doing research specifically to answer the challenges raised by ID. If this is the case, it should be seen as a good thing by everyone. We in the ID movement are proponents of good science. If our criticisms and questions lead to better research, we are unafraid of the results. In the meantime, our current concern is to keep evolutionary scientists honest about the current state of the evidence and to allow young people to understand why there is a controversy about the subject of evolution. (p. 75)
It sounds entirely reasonable, until the last sentence. In evolutionary science — the kind supported by peer-reviewed research — there isn't a controversy about the subject of evolution. The controversy is entirely in the minds of ID proponents who want biological science to be based on a religious idea.


4truth.net
http://www.4truth.net/fourtruthpbscience.aspx?pageid=8589952913

Friday, 7 January 2011

Simulated research: an experimental life

A long time ago in a galaxy far, far away, a group of research scientists set up a simulation experiment using multiple artificial intelligences running on a vast array of extremely fast supercomputers. The simulation was of the emergence of life on an insignificant little blue-green planet orbiting a small unregarded yellow sun in the uncharted backwaters of the unfashionable end of the Western spiral arm of the galaxy.*

The scientists entered certain values into an instance of this simulation, such that sooner or later simulated life would not only emerge on this simulated planet, but would develop simulated intelligence, income tax and rice pudding. And this is what in fact happened.

The intelligent simulated life-forms began to wonder what it was all for, and some speculated about the group of scientists (though of course they did not call them such) who had instigated the whole thing. They came up with a number of theories, including the suggestion that the research scientists themselves (though of course they did not call them such) didn't actually exist. "There's no compelling evidence," they said, "that the universe we live in was created by a group of research scientists" — though they did not use those exact words. "The burden of proof rests with those who claim that the universe was created by a group of research scientists." (Though the words they used might not have been exactly those.)

Some others felt that the doubters were obviously wrong. "Look at the simulated trees," they said (or words to that effect). "The evidence for the existence of the group of research scientists is all around us. How else could simulated life arise, if not by the intentional actions of a group of research scientists?"

The doubters, however, were not impressed. Some of them had done scientific research themselves, and had discovered that much of the simulated life around them, including themselves, exhibited signs of common structure, as if all the various examples of complex simulated life were derived from a much simpler simulated life, and had developed, over a long period of time, from such simple simulated life. They found that they could tinker with that structure and cause certain types of simulated life to develop in particular ways. By examining the structure of all simulated life, they were able to document how it had developed from, ultimately, something very simple indeed.

Those who held to the theory that the simulated universe was instigated by a group of research scientists had to agree that it was not necessary for said research scientists to tinker in any ongoing way, except occasionally in response to special appeals. Sometimes it was felt necessary that events should proceed in a way that did not conform to the established, well-known pattern. Such non-conforming events (if indeed they were non-conforming — some of the doubters disputed even this) were naturally taken as evidence for the existence of the group of research scientists. But though the doubters had shown that the research scientists were not strictly necessary in the normal run of things, they had not shown how everything could have started off at the beginning of time. Surely, therefore, the group of research scientists were responsible for that?

"Not necessarily," said the doubters. "We know how all complex simulated life has developed from simpler simulated life, right back to the least complex simulated life. It seems likely that we will discover how that simplest simulated life came into being."

"But you don't know, do you? It's reasonable, therefore, to suppose that the research scientists were responsible."

"No, we don't know," said the doubters, "but that's no excuse for falling back on an entirely unsupported theory that has no evidence and cannot be falsified."

"You just don't want there to be a group of research scientists, do you? Clearly you're in denial. Or maybe you can't bear the thought of a group of research scientists watching your every move and taking notes."

The doubters were unmoved by what they considered to be appeals to emotion. They had looked at the evidence for the group of research scientists and found it wanting. They were aware that their own research was incomplete, that they still lacked information, but felt justified in reserving judgement regarding the existence of the group of research scientists.

Others did not agree. "How come," they said to the doubters, "that the universe we live in is just the way it is — a way that appears exactly right for us? It must have been made that way so we could be here. And we know who made it. It was obviously the group of research scientists."

"No," said the doubters. "You've got it backwards. We are exactly like we are because we live here. Our universe is what makes us what we are, not the other way around."

"But what made our universe? It must have been the group of research scientists!"

"What made the group of research scientists?" asked the doubters.

"Now you're just being silly."

Of course the group of research scientists observed all of these exchanges and did indeed take notes. Eventually they decided — for no particular reason — that the experiment was complete, and they switched off the simulation.

*With apologies to George Lucas and Douglas Adams