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Human brains can’t copy-paste knowledge, says Geoffrey Hinton. Learning has to happen the slow way: actions, trust, and rewiring connections over time. Even a full sentence only carries a tiny amount of information, so sharing knowledge is painfully low-bandwidth. That limitation is baked into being analog and having different brains.

26,663 görüntüleme • 5 ay önce •via X (Twitter)

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.David Deutsch: “There is an inherent conflict in the human condition—both individually and in society—between the need to preserve existing knowledge and the need to create new knowledge. For most of human history, preserving existing knowledge trumped any kind of attempt to improve knowledge. Because attempts to improve knowledge risk error. Or rather, to be exact, it risks error that has never occurred before. There were plenty of errors that had occurred before. Plenty of kings got overthrown because they couldn’t solve the problem of how to fend off the enemy. But they were in familiar territory conceptually, and they were afraid of changing culture. This fear of changing culture was built into culture itself. And this conflict exists to this day. The most extreme example known to me in the West, anyway, is the conflict in education between preserving existing knowledge and creating new knowledge. Even today, education—education theory—is conceived as the theory of how to decant existing knowledge from the brains that already know it to the brains that do not yet know it. And that’s what Popper calls the ‘bucket theory of the mind’—that the mind is a bucket and knowledge is a fluid. What he stressed, and what I always also want to stress, is that not only is that a mischaracterization of knowledge and of the use of knowledge, but it is the wrong way around. As a practical matter, even right back two million years ago, the transmission of cultural knowledge was not something done by the transmitter; it was something done by the receiver.”

Arjun Khemani

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.Naval: You have a beautiful definition of knowledge, which most people don’t even try to tackle, about how knowledge perpetuates itself in the environment. You gave some really good examples. One was around genes. Successful, highly adapted genes contain a lot of knowledge and can cause themselves to be replicated because they’re survivors. In the same way, knowledge itself is a survivor, in that if you transmit to me the knowledge of how to build a computer, it’s an incredibly useful thing. I’m going to build more and more computers and that knowledge will be passed on. Your underlying point that you repeated here was if you want to understand the physical universe you have to understand knowledge, because it is the thing that over time takes over and changes more and more the universe—more than almost anything else. You have to understand all the explanations behind it. You can’t just say “particle collisions” because that explains everything, so it explains nothing. It’s not a useful level to operate at. Therefore, the things that create knowledge are uniquely influential in the universe. And as far as we know, there are only two systems that create knowledge. There’s evolution and there are humans. But is there a difference even between these two forms of knowledge creation, between evolution and between humans? David Deutsch: Yes. I have argued that the human way of creating knowledge is the ultimate one, that there aren’t any more powerful ones than that. This is the argument against the supernatural. Assuming that there is a form of knowledge creation that’s more powerful than ours is equivalent to invoking the supernatural, which is therefore a bad explanation—as invoking the supernatural always is. The difference between biological evolution and human creative thought is that biological evolution is inherently limited in its range. That’s because biological evolution has no foresight. It can’t see a problem and conjecture a solution. Whenever biological evolution produces a solution to something, it’s always before natural selection has even begun. This is Charles Darwin’s insight. This is the difference between Charles Darwin’s theory of evolution and the other theories of evolution that had been around for a century or more before that, including Charles Darwin’s grandfather and Lamarck. The thing they didn’t get is that the creation of knowledge in evolution begins before. That means that biological evolution can’t reach places that are not reachable by successive improvements, each of which allows a viable organism to exist. Creationists say that biological evolution has, in fact, reached things that are not reachable by incremental steps, each of which is a viable organism. They’re factually mistaken. The thing which they have in mind is the idea of a creator who can imagine things that don’t exist and who can create an idea that is not the culmination of a whole load of viable things. A thinking being can create something that’s a culmination of a whole load of non-viable things. Explanatory creativity makes humans unique Out of all the billions and billions of species that have ever existed, none of them has ever made a campfire, even though many of them would’ve been helped by having the genetic capacity to make campfires. The reason it didn’t happen in the biosphere is that there is no such thing as making a partially functional campfire; whereas there is, for example, with making hot water. The bombardier beetles squirt boiling water at their enemies. You can easily see that just squirting cold water at your enemies is not totally unhelpful. Then making it a bit hotter and a bit hotter. Squirting boiling water no doubt required many adaptations to make sure the beetle didn’t boil itself while it was making this boiling water. That happened because there was a sequence of steps in between, all of which were useful. But with campfires, it’s very hard to see how that could happen. Humans have explanatory creativity. Once you have that, you can get to the moon. You can cause asteroids which are heading towards the earth to turn around and go away. Perhaps no other planet in the universe has that power, and it has it only because of the presence of explanatory creativity on it.

Deutsch Explains

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Karl Popper on How We Gain Knowledge: ––Karl Popper: "People think, usually, that we acquire knowledge by opening our eyes and our ears and let the sensations stream into us, and they believe then that we record this like a camera. In my opinion, if we wish to get knowledge, we have to have a problem. It has to be knowledge of something. We have to find out something. We don't have to wait for information to stream into us, but we have to be inquisitive if we want to get knowledge. If we were passive, we would gain a confused mass of sensations or something like that, which we would hardly be able to understand and to convert into what one may call knowledge. Quite apart from that, perception is not really, in my opinion, the main source of our knowledge. The role of perception is to inform us about a momentary situation in our environment. But we couldn't really interpret our perceptions without knowing much more about our environment, namely, we know whether we are in a house or whether we are in a glacier. So we have two kinds of knowledge: this wider knowledge of a frame in which we orientate ourselves, and the momentary perception which gives us information about the situation at that particular moment. And it is only this situation in which we can use our perception. So we have theoretical knowledge and, if you like, the momentary practical challenge to our theoretical knowledge. And here comes perception in."

Karl Popper Quotes

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