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2045: The Year Man Becomes Immortal

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Re: 2045: The Year Man Becomes Immortal

#31

I read pretty much exactly the same prediction in "The Mighty Micro" in the early 80s (intelligent machines. immortality) etc. - which pretty much influenced me to do a CS degree and go into postgraduate AI research. Nobody would be more delighted than me if immortality is achieved in 2045 (I'll be 80!) but do I expect it? Not really, nor do I expect effective commercial fusion power either (which also has a habit of…

we do, after all, have a working example

Which one?

Re: 2045: The Year Man Becomes Immortal

#32
post #29

All of Kurzweil's predictions are based on extrapolating exponential growth. That's all very well, but exponential growth in physical systems is usually restricted within limits. In a such a system the negative feedback may also be growing exponentially, which means although initially it may be too small to be noticed, after the growth passes some boundary the negative feedback becomes relevant and the overall growth…

I think with the advent of quantum computers a limit in computing power is still far way. Nonetheless, what has brute computing power enabled us to do so far? There have been a few prestigious projects, ie. deep blue, seti, cern, molecular folding, etc. which take advantage of this power. But most research projects profit little from an increase in computing power. I think new software and algorithms play a bigger ro…

I wasn't aware quantum computers had actually been invented yet. They are still theoretical devices.

Quantum computation as been explored but as yet we don't have a computer capable of executing the quantum algorithms.

That aside, all I'm saying is that exponential growth has a limit. That growth could be measured in MIPS or in algorithm performance, it doesn't really matter, but I don't think that growth will continue exponentially.

Re: 2045: The Year Man Becomes Immortal

#33
post #9

Why does everyone seem to think that machine intelligence is solely a function of processor speed?

You'd better hope it is. If hardware is what limits the rate of improvement of AI, you get slow growth. If knowledge of how to write the software (perhaps by copying algorithms from the brain) limits it, then you get sudden improvements and serious potential for a runaway singularity.

Just the opposite - I hope it's not!

Even assuming current processing capability growth rates continue, it's unlikely I'll live to see a complete modeling of the human brain (an emulation approach to AI). There's always the possibility someone will discover a secret sauce that permits self-aware artificial intelligence.

That would be an interesting time to live in.

Re: 2045: The Year Man Becomes Immortal

#34

All of Kurzweil's predictions are based on extrapolating exponential growth. That's all very well, but exponential growth in physical systems is usually restricted within limits. In a such a system the negative feedback may also be growing exponentially, which means although initially it may be too small to be noticed, after the growth passes some boundary the negative feedback becomes relevant and the overall growth…

Building some intelligent machine is still possible within this limit. There is an example that it is possible: the human brain.

But you are right that we could be more far away from that than what we think. And also that it may be that the limit of intelligence of some machine might actually not be so much be ahead of human intelligence. (Whereby, personally, I think that it should be theoretically and practically possible to build much more intelligent machines at some point.)

Re: 2045: The Year Man Becomes Immortal

#35
post #18

I remain unconvinced that a transplanted consciousness would really be the same person as opposed to a new, identical person. What's worse, it might be impossible to tell the difference since even the new consciousness wouldn't be able to know. … But it'd really suck to be the last generation before some significant increase in lifespan (say, up to 200) is reached.

How do you know that the instance of you that awakes every morning is really the "same" consciousness as went to sleep the night before? :-)

Re: 2045: The Year Man Becomes Immortal

#36
post #18

I remain unconvinced that a transplanted consciousness would really be the same person as opposed to a new, identical person. What's worse, it might be impossible to tell the difference since even the new consciousness wouldn't be able to know. … But it'd really suck to be the last generation before some significant increase in lifespan (say, up to 200) is reached.

If even the new consciousness isn't able to know, then what does "same" mean and what part of that definition aren't you satisfying? More acutely, why should you care about satisfying it?

Re: 2045: The Year Man Becomes Immortal

#37
post #31

I read pretty much exactly the same prediction in "The Mighty Micro" in the early 80s (intelligent machines. immortality) etc. - which pretty much influenced me to do a CS degree and go into postgraduate AI research. Nobody would be more delighted than me if immortality is achieved in 2045 (I'll be 80!) but do I expect it? Not really, nor do I expect effective commercial fusion power either (which also has a habit of…

we do, after all, have a working example Which one?

Hint: You're using it right now. Hopefully.

Re: 2045: The Year Man Becomes Immortal

#38

All of Kurzweil's predictions are based on extrapolating exponential growth. That's all very well, but exponential growth in physical systems is usually restricted within limits. In a such a system the negative feedback may also be growing exponentially, which means although initially it may be too small to be noticed, after the growth passes some boundary the negative feedback becomes relevant and the overall growth…

"The question is how close are we to the limit and that is something we are only likely to know when we reach it." You've posed the question and then immediately explained why it's fruitless to ask. Even if you are right that there must be limits; if you have no idea when his models are likely to break down then your skepticism is no more solid than his prediction.

My scepticism is of the implicit claim that you make predictions by extrapolating exponential growth curves. You can't, you can only make predictions up to the point the exponential growth breaks down, and as you can't predict that point before it happens you can't make predictions.

I'm not saying he is wrong about the next 100 years, the singularity or AI, I'm saying may be wrong about the short term and he certainly can't be right indefinitely.

Re: 2045: The Year Man Becomes Immortal

#39

All of Kurzweil's predictions are based on extrapolating exponential growth. That's all very well, but exponential growth in physical systems is usually restricted within limits. In a such a system the negative feedback may also be growing exponentially, which means although initially it may be too small to be noticed, after the growth passes some boundary the negative feedback becomes relevant and the overall growth…

Building some intelligent machine is still possible within this limit. There is an example that it is possible: the human brain. But you are right that we could be more far away from that than what we think. And also that it may be that the limit of intelligence of some machine might actually not be so much be ahead of human intelligence. (Whereby, personally, I think that it should be theoretically and practically p…

I agree with you entirely, I'm sure strong AI will be reached. Even if we dropped down onto linear growth, I think strong AI isn't that far away. I just think exponential growth can't continue indefinitely as Kurzweil predicts.

Re: 2045: The Year Man Becomes Immortal

#40
The article states that "computer are getting faster faster". I personally wouldn't be so sure, have they not heard about the end of Moore's law ?

A more fundamental issue for me is that computer aren't able to think in place of people. If you want to work on hard problems, you have to learn all the relevant information beforehand. Thus setting a hard limit on how much progress can be made, provided we do not find ways to learn faster or to make computers think for us.

Add to this that for me many domains of knowledge nowadays are presented in unnecessary complex ways. We are building (and this is especially true in computer science) a bunch of complexity based on a bunch of complexity. I believe that one day the piled complexity will lead us to a standstill and that we will have to seriously simplify some systems.

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