Wednesday, May 11, 2005
This Day:

One thing that separates the biological world from the non-biological is its ability to reproduce. All organisms reproduce in some fashion. Now scientists at Cornell University in Ithaca, New York have created a robot that can replicate itself in minutes :). If perfected, the technique could lead to the creation of swarms of robots, with little or no input from the scientists. Once that happens, small errors in reproduction, and a drive similar to the survival of the fittest in biological evolution, might lead to better and smarter robots!

Assembling robots (Courtesy: National Geographic)
The robot was constructed from cube-shaped robotic units (modules) that functioned independently. Each cube contains a microprocessor, a motor, and electromagnets. The magnets selectively weaken and strengthen connections between other cubes, thereby determining where the structure breaks and joins. The growing cube assemblies are supplied with extra cubes at two "feeding" locations. A three-module robot can replicate itself in just over a minute. A four-module robot could assemble an exact replica of itself in just two and a half minutes. The research is published in the May 12 edition of the journal Nature.
Each cube is programmed with certain building instructions, such as contact and release events. Starting with a single robot, it can seek out other such cubes and construct a replica of itself. This process can go on forever, as long as there are cubes left! However, given enough cubes, the robots might be able to reconfigure the cubes into new forms, and hence technically new robot-forms. Different cubes can also have different functionalities, for example, some could be equipped with digging tools, others with lifting tools, and so on. This will be interesting, say, for lunar missions, where depending upon the task at hand, the robots can reconfigure themselves!
The Cornell robot is just a proof-of-concept. More research is of course required. And hopefully, we wont have a breed of super-robots desperate to eliminate us humans from this planet :D:D.

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11 Comments:

At May 12, 2005 9:06 AM, Blogger Onkroes said...
"And hopefully, we wont have a breed of super-robots desperate to eliminate us humans from this planet"

At least until a week next Tuesday ;-)


This is fascinating stuff. I always wonder however, just how much the programming directs the reproduction (i.e. if it's too intrusive then spontenaity can be negligible).
 
At May 12, 2005 2:29 PM, Blogger Sray said...
Onkroes: This is a proof-of-concept robot, and has a very rudimentary programming and capabilities. In fact, it is very easy to mimic what these robots are doing, by using software simulation. But the trick is to do it in hardware. These robots use prefabricated cubes, but I really wonder that in a few decades or so, we might be making robots which will reproduce themselves using raw materials from nature. Then there is no turning back, as these robots might turn into viruses, and start killing us!

Gindy: Again, if you read my comment to Onkroes, we are not at that stage yet. But in another couple of decades, with advances in biotech and nanotech and robotics... hmm, you get the idea!
 
At May 12, 2005 4:25 PM, Blogger Akruti said...
Well,a few researchs sure scare me. "And hopefully, we wont have a breed of super-robots desperate to eliminate us humans from this planet"
The day will come,we might not be there but then it sure will come one day:)
 
At May 12, 2005 5:50 PM, Blogger Sray said...
But I have to wonder: can such a robot species do more damage to humankind than we have already done to ourselves?
 
At May 12, 2005 6:54 PM, Blogger Phantom of the Blog said...
that is kind of freaky
 
At May 12, 2005 8:47 PM, Blogger Unknown said...
Hey, but we can improve ourselves using machine parts as well, for those who arent averse of being Cyborgs! Whatever may come, machines will rule the world........ either as a part of us or as our rival!

If these bots get to the nano scale, we could create artificial life. In fact they havve already artificially synthesised a few viruses(without nanotech). And do we call these as machines or not?
 
At May 13, 2005 4:01 AM, Blogger Sray said...
Nurhan: :-).

Sudhir: There is a difference. We can replace all parts of our body with artificial parts, but as long as our brain is still ours, we are still we.
The viruses are created by resynthesizing the genetic code of existing viruses. So it is a replication, not a new creation. But yes, in a few years, we might be able to create one from scratch, and that could very well be dangerous.
 
At May 13, 2005 5:46 AM, Blogger Onkroes said...
"We can replace all parts of our body with artificial parts, but as long as our brain is still ours, we are still we."

There are a lot of (otherwise perfectly rational) people who would disagree! I agree with you though.

I think one of the key drivers for robotic technology lies in space exploration. The human body is just too frail and needy to withstand wandering around off-and-on-planet for too long. Add in some artificial intelligence and it could help the human race expand enormously - on the other hand, if the robots are intelligent, then who are they exploring for, and how long would that 'slavery' last? It's a sobering thought that many of Arthur C Clarke's stories may be a lot closer to a real future than we all thought when we read them the first time.
 
At May 13, 2005 10:39 AM, Blogger Sray said...
Onkroes: I agree too. But genetic engineering might be able to make a new group of superhumans, who can go into space and do things that we cant do. So, there are two possibilities. 1) Engineered humans, 2) AI-driven robots. The third option could be humans in a space-suit with all the advanced features, but it might be prohibitive in some situations.

Lucretia: :)).. I think these things might be in the market soon, as playthings! So perhaps you can get one then :D.
 
At May 14, 2005 9:08 AM, Blogger wise donkey said...
:)) wow.
will be goin on a trip so will have to miss your posts for more than a month:( hope to catch up with them when i come back.


===
Congrats on the 100th post:)
 
At May 14, 2005 10:18 AM, Blogger Sray said...
WD: Good luck :):):). And you can always read all my posts from the archives :D:D:D.

Thanks for the congrats :):). Hope I can continue writing this blog.....
 

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