<p dir="ltr">Some of our discussion seems to be about 'How the brain works'. I am of course not smart enough to answer this question. So let me try another system.</p>
<p dir="ltr">How does a radio work? I guess it uses an antenna to sense an electromagnetic wave that is then amplified so that an electromagnet can drive a membrane to produce an airwave that can be sensed by our ear. Hope this captures some essential aspects.</p>
<p dir="ltr">Now that you know, can you repair it when it doesn't work?</p>
<p dir="ltr">I believe that there can be explanations on different levels, and I think they can be useful in different circumstances. Maybe my above explanation is good for generally curious people, but if you want to build a super good sounding radio, you need to know much more about electronics, even quantitatively. And of course, if you want to explain how the electromagnetic force comes about you might need to dig down into quantum theory. And to take my point into the other direction, even knowing all the electronic components in a computer does not tell you how a word processor works.</p>
<p dir="ltr">A multilayer perception is not the brain, but it captures some interesting insight into how mappings between different representations can be learned from examples. Is this how the brain works? It clearly does not explain everything, and I am not even sure if it really captures much if at all of the brain. But if we want to create smarter drugs than we have to know how ion channels and cell metabolism works. And if we want to help stroke patients, we have to understand how the brain can be reorganized. We need to work on several levels.</p>
<p dir="ltr">Terry Sejnowski told us that the new Obama initiative is like the moon project. When this program was initiated we had no idea how to accomplish this, but dreams (and money) can be very motivating. </p>
<p dir="ltr">This is a nice point, but I don't understand what a connection plan would give us. I think without knowing precisely where and how strong connections are made, and how each connection would influence a postsynaptic or glia etc cells, such information is useless. So why not having the goal of finding a cure for epilepsy?</p>
<p dir="ltr">I do strongly believe we need theory in neuroscience. Only being descriptive is not enough. BTW, theoretical physics is physics. Physics would not be at the level where it is without theory. And of course, theory is meaningless without experiments. I think our point on this list is that theory must find its way into mainstream neuroscience, much more than it currently is. I have the feeling that we are digging our own grave by infighting and some narrow 'I know it all' mentality. Just try to publish something which is not mainstream even so it has solid experimental backing.</p>
<p dir="ltr">Cheers, Thomas</p>