Friday, May 25, 2007

VISIONS OF A ROBOT DREAM - Part 2


VISIONS OF A ROBOT DREAM - Part 2
My last entry introduced the topic of "Hybrots" (I personally like to call them "Biobots"). For people who are completely unfamiliar with this unfamiliar term, "Hybrots" describe a robotic system that is coupled with an incubated unit for housing a neuron cell culture. This cell culture acts as the brain for the entire robotic system. "Training" these cell cultures enable it to react to certain scenarios in specific ways. The bond between the system developer and the neural network is akin to the relationship between a parent and a baby. Currently, because of the life span of the cell culture (close to 2-3 years), a saturation point is attained beyond which no more "training" can take place, but I strongly believe that within the end of the next decade this hassle will cease to exist. [Rachael, a replicant from Blade Runner, with a four year life span.] How? You may ask. This question warrants a whole new entry (which I will be glad to discuss about later), but for now lets just assume that advances in bio-technology and robotics allow for the creation and existence of these "Hybrots".

I strongly feel that if robotists ever were to create a robot with intelligence that mirrors our own then it would definitely be one with living brain cell, most likely human. I could never imagine any piece of integrated circuitry reverse engineered to map the functions of the human brain, the most complex processor known to man. Mankind isint far from witnessing a society peppered with Hybrots, co-existing with humanity, helping it to grease its gears. Which brings us back the question that I put forth in my previous entry: "Should these Hybrots be considered living entities?"

There will be some who might asseverate Hybrots as living entities without any hesitation. There will also be some (the obvious skeptics) who might claim that Hybrots can be only be considered a living entity when they attain a state of consciousness. Now, what is consciousness? Consciousness in robotics is a relative state of mind that makes a robot self-aware. A conscious robot is supposed to comprise of attributes such as a sense of place, imagination, directed attention, planning, decision and emotion. [David, a 11 year old robot boy from Artificial Intelligence, with emotional capabilities.] Programming the various attributes mentioned above into a robotic system would indeed be an exacting task but imbibing the necessary qualities for a robot to possess emotion and imagination is Herculian in nature. Sadly, at present, the research surrounding these attributes lies vastly in theory, however, it's practical implementations has just witnessed its genesis last decade.

This entry is filled with assumptions galore, so it doesn't adversely affect us if we throw in one more. Let us consider the possibility that some brilliant mind in the future comes up with a design for implementing emotions and imagination into a Hybrot. This would not only make the Hybrot a conscious sentient being but would also win the inventor a Nobel prize that year (i.e if Alfred Nobel still has funds in his savings account). Even after this there will be some who would just refuse to treat Hybrots as living beings. They could always argue that consciousness is a relative term and even if a robot is self-aware, without a moral and ethical foundation it cannot be considered a living entity. Stubborn but a very interesting point nonetheless.

The only way for a robot to possess moral or ethical values is by making it three laws safe. Of course by three laws I meant the one and only, (actually three and only..pardon my flaccid flippancy with words) three laws of Robotics by Isaac Asimov. [Adverse effects of the three laws of robotics.] In accordance with Wikipedia, "the Three Laws of Robotics are a set of three rules written by Isaac Asimov, which almost all positronic robots appearing in his fiction must obey. Introduced in his 1942 short story "Runaround", although foreshadowed in a few earlier stories, the Laws state the following:

1. A robot may not injure a human being or, through inaction, allow a human being to come to harm.
2. A robot must obey orders given to it by human beings except where such orders would conflict with the First Law.
3. A robot must protect its own existence as long as such protection does not conflict with the First or Second Law."

Even though these laws were meant to be ethical guidelines instead of rules to be followed during the engineering process involving the development of a robot, till this date they are still considered to be the pioneering laws of robotics. It's my belief that these laws would stand the test of time (and possibly be implemented in all Hybrots in the near future?). A first glance at these laws reveal to the reader the ideal characteristics of an epitome citizen. [Andrew Martin, a robot from Bicentennial Man, who yearns to become human.] So mankind can be assured that a Hybrot which is manufactured "three laws safe" could be considered a citizen of the society as it supplants its own safekeeping with the safety of the humans around him. It is only natural that a Hybrot be considered a living entity when he surpasses an average human on moral standards.

However, a second glance at these laws would reveal to the reader a myriad of loopholes that could be best described as a programmer's nightmare. So are these Hybrots that are "three laws safe", actually "three laws safe"? Using the same lame excuse from last blog, I shall discuss how safe the three laws actually are in my next blog. Until then I shall bid thee avid reader, a big adieu.

[Cover of Robots of Dawn By Isaac Asimov.]

Transmission complete - Amrith

{I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near the Tannhauser gate. All those moments will be lost in time, like tears in rain. Time to die. - Roy Batty}

Wednesday, May 23, 2007

VISIONS OF A ROBOT DREAM - Part 1


VISIONS OF A ROBOT DREAM - Part 1
Hi everybody!! After a humongous hiatus, I am back to blogging this summer. Long gone are those days of movie based blogs. I strongly feel that there are a lot more unimportant but pressing issues that could be expressed here. This doesn't mean that I shall not be covering movies any longer, it just means that I have adjusted my field of vision for a more panoramic view.

Currently, I have been actively interested in neural networks. Just to refresh your memory, neurons are electrically excitable cells in the nervous system whose main function is to process and transmit information. [Hippocampal neuron expressing monomeric Green Fluorescent Protein (GFP)] Neurons are typically composed of three main parts: a soma, or cell body, a dendritic tree and an axon. Every neuron is an open-loop control system by itself, where the neuron receives input via its soma or dendritic tree and provides an output via the axon. An area of intense research is not just to understand the properties of an individual neuron but also to understand how millions of neurons interact with one another to realize intelligent systems.

Recent research has explored using cultures of neurons as computing devices. [A Multi-Electrode Array (MEA)] One device used to study biological neural networks is a Multi-Electrode Array (MEA): “a specialized tissue culture dish in which living neurons can be grown over multiple stimulation and recording electrodes”. These electrodes enable recording signals generated by the neuron cell culture and also provide a means to stimulate the cell culture. In order to “train” these cultures, a system to measure and stimulate culture electrical activity is needed. After “training” the neuron cell culture, fusing it with various control system techniques can make it act as the “brain” of an engineered system.

With some imagination, anybody can easily see the scope of the field and its unmistakable connection with the positronic brain. [Sonny, a character from I Robot, with two positronic brains] For the uninformed Wikipedia quotes, "a positronic brain is a fictional technological device, originally conceived by science fiction writer Isaac Asimov. Its role is to serve as a central computer for a robot, and, in some unspecified way, to provide it with a form of consciousness recognizable to humans. When Asimov wrote his first robot stories in 1939/1940, the positron was a newly discovered particle and so the buzz word positronic, coined by analogy with electronic, added a contemporary gloss of popular science to the concept."

Being an avid reader of Isaac Asimov, I wonder whether he ever considered his positronic brain to be biological in nature. Because in case we do succeed in developing a fully functional neural network to act as a brain for an engineering system, aren't we creating a new biological entity? The birth of a new species? Fused with robotics, could this lead to the development of robots that Asimov conceived in his books? Though the research in the field of neural networks is relatively in its infancy, if neural networks could be trained to perform complex tasks then the answer to the above questions would definitely be a "yes". [Robots in society: A capture from the Animatrix (Second Renaissance)] This obviously raises many questions on the social impact of this research but most importantly this one: "If these bio-electro-mechanical entities ever come to exist, should they be given their own rights?"

Vehemently adhering to the nature of a blog and from the fear of turning this entry into a lecture, I shall address the issues of "robot rights" in tomorrow's blog. Until then I shall leave these issues for you to ponder over the night.

Transmission complete - Amrith