The two concepts that I thought were missing from Eliezer’s technical explanation of technical explanation that would have simplified some of the explanation were compression and degrees of freedom. Degrees of freedom seems very relevant here in terms of how we map between different representations. Why are representations so important for humans? Because they have different computational properties/traversal costs while humans are very computationally limited.
Griffiths argued that the aspects we associate with human intelligence – rapid learning from small data, the ability to break down problems into parts, and the capacity for cumulative cultural evolution – arose from the 3 fundamental limitations all humans share: limited time, limited computation, and limited communication. (The constraints imposed by these characteristics cascade: limited time magnifies the effect of limited computation, and limited communication makes it harder to draw upon more computation.) In particular, limited computation leads to problem decomposition, hence modular solutions; relieving the computation constraint enables solutions that can be objectively better along some axis while also being incomprehensible to humans.
Thanks for the link. I mean that predictions are outputs of a process that includes a representation, so part of what’s getting passed back and forth in the diagram are better and worse fit representations. The degrees of freedom point is that we choose very flexible representations, whittle them down with the actual data available, then get surprised that that representation yields other good predictions. But we should expect this if Nature shares any modular structure with our perception at all, which it would if there was both structural reasons (literally same substrate) and evolutionary pressure for representations with good computational properties i.e. simple isomorphisms and compressions.
The two concepts that I thought were missing from Eliezer’s technical explanation of technical explanation that would have simplified some of the explanation were compression and degrees of freedom. Degrees of freedom seems very relevant here in terms of how we map between different representations. Why are representations so important for humans? Because they have different computational properties/traversal costs while humans are very computationally limited.
Can you say more about what you mean? Your comment reminded me of Thomas Griffiths’ paper Understanding Human Intelligence through Human Limitations, but you may have meant something else entirely.
Griffiths argued that the aspects we associate with human intelligence – rapid learning from small data, the ability to break down problems into parts, and the capacity for cumulative cultural evolution – arose from the 3 fundamental limitations all humans share: limited time, limited computation, and limited communication. (The constraints imposed by these characteristics cascade: limited time magnifies the effect of limited computation, and limited communication makes it harder to draw upon more computation.) In particular, limited computation leads to problem decomposition, hence modular solutions; relieving the computation constraint enables solutions that can be objectively better along some axis while also being incomprehensible to humans.
Thanks for the link. I mean that predictions are outputs of a process that includes a representation, so part of what’s getting passed back and forth in the diagram are better and worse fit representations. The degrees of freedom point is that we choose very flexible representations, whittle them down with the actual data available, then get surprised that that representation yields other good predictions. But we should expect this if Nature shares any modular structure with our perception at all, which it would if there was both structural reasons (literally same substrate) and evolutionary pressure for representations with good computational properties i.e. simple isomorphisms and compressions.