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LongTomH Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Feb-14-10 09:04 PM
Original message
Nanotechnology from Feynman to Drexler
An important anniversary went(mostly) unremarked this last December. It was on December 29, 1959, that the late Dr. Richard Feynman delivered an after-dinner talk to the American Physical Society's annual meeting in Pasadena, California. Feynman had not yet attained national prominence as a member of the Challenger Commission or as a Nobel Prize winner; but, he was respected by his colleagues as an important voice in American physics. That talk: "There's Plenty of Room at the Bottom" and its consequences were the topic of an article by Adam Keiper in the Wall Street Journal, and a reply by Dr. Eric Drexler on his blog: Metamodern.com.

Quoting from the WSJ article:
Feynman said that he really wanted to discuss "the problem of manipulating and controlling things on a small scale." By this he meant not mere miniaturization but something much more extreme. "As far as I can see," Feynman said, the principles of physics "do not speak against the possibility of maneuvering things atom by atom." In fact, he argued, it is "a development which I think cannot be avoided." The physicist spoke of storing all the information in all the world's books on "the barest piece of dust that can be made out by the human eye." He imagined shrinking computers and medical devices, and developing new techniques of manufacturing and mass production. In short, a half-century ago he anticipated what we now call nanotechnology—the manipulation of matter at the level of billionths of a meter.

Some historians depict the speech as the start of this now-burgeoning field of research. Yet Feynman didn't use the word "nanotechnology" himself, and his lecture went for years almost entirely unmentioned in the scientific literature. Not until the 1980s did nanotechnology researchers begin regularly citing Feynman's lecture. So why, then, does one encyclopedia call it "the impetus for nanotechnology"? Why would one of Feynman's biographers claim that nanotechnology researchers think of Feynman "as their spiritual father"?

Keiper remarked on the way that nanotechnology has been 'redefined' in recent years:

Much of the work that now goes under the rubric of nanotechnology is essentially a specialized form of materials science. In the years ahead, it is expected to result in new medical treatments and diagnostic tools, ultraefficient water-filtration systems, strong and lightweight materials for military armor, and breakthroughs in energy, computing and medicine. Meanwhile, hundreds of consumer products using (or at least claiming to use) nanomaterials or nanoparticles went on the market in the past decade, including paints and cosmetics, stain-resistant garments, and bacteria-battling washing machines and food containers.

<snip>

But there is another kind of nanotechnology, one associated with much more hype. First described in the 1980s by K. Eric Drexler, this vision involves building things "from the bottom up" through molecular manufacturing. It was Mr. Drexler who first brought the term "nanotechnology" to a wide audience, most prominently with his 1986 book "Engines of Creation." And it is Mr. Drexler's interpretation that has captured the public imagination, as witness the novels, movies and video games that name-drop nanotechnology with the same casual hopefulness that the comic books of the 1960s mentioned the mysteries of radiation.


Dr. Drexler remarked that the article is "uncommonly accurate;" but, he expressed a desire for "more meat and spices in the soup:"

  • More about the scientific basis for the concept of molecular manufacturing (in scientific publications, doctoral work), to balance the talk about implausible prospective wonders,
  • Mention of the enormous progress on the research agenda that I’ve advocated from 1981 forward (new fields of science, tens of thousands of papers), to correct the mistaken impression that no Federal R&D funding has gone toward “the kind of nanotechnology that Drexler proposed”,
  • In connection with the science-funding politics that Mr. Keiper describes, it would be pertinent to mention the post-2000 redefinition of what “nanotechnology” is, and the reversal of position regarding what it can do; this is on the record in public statements* and official documents.


Dr. Drexler complimented Adam Keiper for his service in pointing out that National Research Council had called for more Federal research support for the type of nanotechnology that Eric Drexler has been talking and writing about since 1977.

There's a good definition of molecular nanotechnology at the Center for Responsible Nanotechology site.

I'd like to add that I've been following discussion of molecular nanotechnology (MNT) since I hearing Eric Drexler speak at a conference in 1986. There has been considerable progress since then. A lot people have put their faith in the potentials of a mature, molecular nanotechnology to change the world for the better; these are the "futurists" that Adam Keiper refers to in the WSJ article.

My own feelings are a mixture of hope - and dread! MNT has a great potential to address problems such as climate change, peak oil, water shortages and resource depletion. Much of its promise lies in the fact that its so much more efficient in its use of energy and materials than conventional manufacturing. Chris Phoenix and Mike Treder of the Center for Responsible Nanotechnology have pointed out that MNT could reduce the gap between the world's rich and poor or increase it. It could also result in a dangerous arms race. This article by Mike Treder also discusses the promises and threats of molecular nanotechnology.

That's the major reason that I want progressives to get involved in discussion of MNT and public policies on its use and implementation. Given our present trajectory toward a world 'plutonomy,' an economy run by and for the ultra-rich, it's more likely to increase that gap.

I might also point out that China and India have gotten the message about nanotechnology, and they see it as The Next Big Wave of Outsourcing[/b>].

If you're seriously interested in the history of nanotechnology, check out Dr. Drexler's series on Metamodern:
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bemildred Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Feb-14-10 09:11 PM
Response to Original message
1. Biology and nanotechnology seem similar in some ways.
Hmmm ...
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lapfog_1 Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Feb-14-10 09:18 PM
Response to Original message
2. Atomic level manipulation has already occured.


back in April 1990, almost 20 years ago.
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lazarus Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Feb-14-10 09:23 PM
Response to Original message
3. Gray goo
That's the only thing that scares me about nanotechnology. I think nanotechnology can and will revolutionize our society, but we have to be careful of the goo.
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LongTomH Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Feb-14-10 09:38 PM
Response to Reply #3
4. Grey Goo is no longer a real issue!
Drexler's earliest work involved independent 'assemblers' - sometimes mislabeled 'nanobots' - could 'replicate,' i.e. produce copies of themselves. The problem with such replicators is that:
  1. They would have to contain all the software instructions to produce themselves, and
  2. they would have to have an independent source of energy, and
  3. if that wasn't enough, there is the problem of heat rejection in a growing mass.

That, and other reasons, are why Drexler and other researchers have settled on the concept of a 'nanofactory,' basically, a molecular assembly line - controlled by a macro-scale computer, with raw material fed in, a cooling system and - most importantly - a 'plug' that can be pulled to shot everything down.

This is discussed on the Center for Responsibility website.
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lazarus Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Feb-14-10 10:15 PM
Response to Reply #4
6. great
Once we have molecular and atomic assembly down, think of what that's going to do to our economy. All you'll ever need to buy is a "replicator" and the programs to make things.
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LongTomH Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Feb-14-10 10:27 PM
Response to Reply #6
7. The fact that nanotechnology is disruptive is discussed........
.............on the Center for Responsibility website. This fact has been discussed frequently on the CRN blog. Just go to the archives for the CRN blog.
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lazarus Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Feb-14-10 10:50 PM
Response to Reply #7
8. Oh, I like the idea
I'm not a big fan of capitalism.
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LongTomH Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Feb-14-10 09:55 PM
Response to Original message
5. A YouTube animation of a Nanofactory:
Edited on Sun Feb-14-10 09:59 PM by LongTomH
http://www.youtube.com/watch?v=zqyZ9bFl_qg

This was made with a grant from NanoRex Inc.
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BrklynLiberal Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Feb-14-10 11:46 PM
Response to Reply #5
9. Holey Moley!
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AdHocSolver Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Feb-15-10 12:01 AM
Response to Original message
10. Brings to mind Genetically Modified "Frankenfood", "Terminator" seeds, and Monsanto.
What will be the cause of the end of the human species on earth: a collision with a meteor or unregulated corporate capitalism?
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LongTomH Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Feb-16-10 03:38 PM
Response to Reply #10
11. The fallacy of: "Argument by analogy"
This is taken from the Info-Pollution website.

In an argument by analogy it is claimed that if two things have certain characteristics (A) in common, then they are also probably have one or more additional traits (B) in common. When done well the argument can lead to an increase in knowledge. For example, Charles Darwin noted the similarities between animal and plant breeding (artificial selection) and natural selection in developing his theory of evolution. But when done poorly or deceptively it can mislead, and is a leading propaganda tool. Here is the basic form:

Sam likes Bach, Beethoven, Brahms and Bruckner.

I now Sally likes Bach, Beethoven and Brahms. She will probably like Bruckner also, so I will buy this CD for her.

In many cases the additional trait(s) are simply implied. Calling pork "the other white meat" implies that like chicken and fish it is better for you than red meat. The advertisement can convince at least same of the viewers, without any data to support it.


In this case, nanotechnology is merely mentioned in the same sentence with "Genetically Modified 'Frankenfood','Terminator' seeds, and Monsanto," without giving arguments as to why they are similar or identical.

Please be aware: I raised the question of corporatist misuse of nanotechnology; but, I tried to discourage an outright, neo-luddite rejection of nanotechnology. My intent was to give people an incentive to follow the leads, educate themselves on the issues surrounding this new technology, and - hopefully - take part in the dialogue.

By the way, I deliberately wrote 'dialogue' instead of 'debate.' I want a reasoned dialogue on the issues, not a shouting match.
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ShamelessHussy Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Feb-16-10 05:56 PM
Response to Original message
12. Dr.Richard Feynman is one of my ALL time favorite sensei
I never attended a single class of his, nor have I ever met him, but I know of him through his books, and lectures, and wow... what a brain!

:hi:
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