24 DEC 2013 by ideonexus
How Neural Circuitry is Laid Down
In thinking about hidden layers, it’s important to distinguish between the routine efficiency and power of a good network, once that network has been set up, and the difficult issue of how to set it up in the first place. That difference is reflected in the difference between playing the piano (or, say, riding a bicycle, or swimming) once you’ve learned (easy) and learning to do it in the first place (hard). Understanding exactly how new hidden layers get laid down in neural circuitry is ...Frank Wilczek describes one of the great questions of science, how the difficult taks of learning something leads to the learned easy of later doing it.
03 JAN 2011 by ideonexus
Spinoza's Reasoning was Childish
There's a tendency to pomposity in all this, to make it all deep and profound. My son is taking a course in philosophy, and last night we were looking at something by Spinoza--and there was teh most childish reasoning! There were all these Attributes, and Substances, all this meaningless chewing around, and we started to laugh. Now, how could we do that? Here's this great Dutch phiosopher, and we're laughing at him. It's because there was no excuse for it! In that same period there was Newton...Feynman talks about reading the great Dutch philosopher with his son.