3 ms·

Fast Minds And Slow Computers (2011)

23 points by optimalsolver 4y ago

titzer 4y ago
> A Von Neumman machine (which separates memory and processing) would struggle to execute a logarithmic search within even it's fastest, pathetically small on-die cache in a few dozen clock cycles. It would take many millions of clock cycles to perform a single fast disk fetch. A brain can access most of it's [sic] entire memory every clock cycle. The last sentence is just guffaw-inducing ignorance. A brain might have a lossy, highly compressed and probabilistic index, that doesn't mean it can access its whole memory in a clock cycle. > ... more speculation...and then > So you'd need a couple hundred terrabytes worth of memristor modules to make a human brain sized AGI, costing on the order of $200k or so. Holy cow, what a leap. What if neurons don't work like memristors? What if neurons are more like tiny FFT circuits, working on firing rates, integrating over time, encoding information into frequencies? What if the molecular structure of the insides of neurons works more like a forest of tuning forks and can use molecular computers to do analog, approximate calculations that we're simulating with GANNs using weights? This person is...ok, let me read a little more... > For safety purposes, the human designers have created some small initial population of AGI brains and an elaborate Matrix simulation that they can watch from outside. Humans control many of the characters and ensure that the AGI minds don't know that they are in a Matrix until they are deemed ready. ...high as balls maybe?
- deleted 4y ago
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- tablespoon 4y ago
  > The last sentence is just guffaw-inducing ignorance.... > Holy cow, what a leap. What if neurons don't work like memristors?... > This person is...ok, let me read a little more... > ... > ...high as balls maybe? It's LessWrong, what did you expect?
- zmgsabst 4y ago
  Also, it’s a lot easier when the system runs at 100Hz than 2,000,000,000Hz to access memory in a “single clock cycle”. At 1,000,000 cycles to access, the computer has 20x the IOPS of the brain that can do it in a “single clock cycle” — 2,000 IOPS vs 100 IOPS. It’s nonsense, even if you take the crazy claim as true.
Qem 4y ago
I think, If forgetting is inherent to any neuromorphic human-like cognition, being able to accelerate subjective time would not be that useful, as forgetting would just be as accelerated as learning. As subjective time progresses beyond what would be several human lifespans, and our AI amasses knowledge, at some point it will eventually spend a lot of time just reviewing materials trying avoid to forget what it already learned.

23 points by optimalsolver 4y ago

> A Von Neumman machine (which separates memory and processing) would struggle to execute a logarithmic search within even it's fastest, pathetically small on-die cache in a few dozen clock cycles. It would take many millions of clock cycles to perform a single fast disk fetch. A brain can access most of it's [sic] entire memory every clock cycle. The last sentence is just guffaw-inducing ignorance. A brain might have a lossy, highly compressed and probabilistic index, that doesn't mean it can access its whole memory in a clock cycle. > ... more speculation...and then > So you'd need a couple hundred terrabytes worth of memristor modules to make a human brain sized AGI, costing on the order of $200k or so. Holy cow, what a leap. What if neurons don't work like memristors? What if neurons are more like tiny FFT circuits, working on firing rates, integrating over time, encoding information into frequencies? What if the molecular structure of the insides of neurons works more like a forest of tuning forks and can use molecular computers to do analog, approximate calculations that we're simulating with GANNs using weights? This person is...ok, let me read a little more... > For safety purposes, the human designers have created some small initial population of AGI brains and an elaborate Matrix simulation that they can watch from outside. Humans control many of the characters and ensure that the AGI minds don't know that they are in a Matrix until they are deemed ready. ...high as balls maybe?

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tablespoon 4y ago
> The last sentence is just guffaw-inducing ignorance.... > Holy cow, what a leap. What if neurons don't work like memristors?... > This person is...ok, let me read a little more... > ... > ...high as balls maybe? It's LessWrong, what did you expect?
zmgsabst 4y ago
Also, it’s a lot easier when the system runs at 100Hz than 2,000,000,000Hz to access memory in a “single clock cycle”. At 1,000,000 cycles to access, the computer has 20x the IOPS of the brain that can do it in a “single clock cycle” — 2,000 IOPS vs 100 IOPS. It’s nonsense, even if you take the crazy claim as true.

Qem 4y ago

I think, If forgetting is inherent to any neuromorphic human-like cognition, being able to accelerate subjective time would not be that useful, as forgetting would just be as accelerated as learning. As subjective time progresses beyond what would be several human lifespans, and our AI amasses knowledge, at some point it will eventually spend a lot of time just reviewing materials trying avoid to forget what it already learned.