> Point taken. But [...]

I don't think you can say the point was taken if you then go on to repeat exactly what you said before people made that point. People have been telling you ADD and clinical depression ARE problems in the physical brain with known and well-described physical causes. You're still saying they aren't.

Medical knowledge of the brain is still some way behind medical knowledge of the rest of the body, but I think you need to realise that some things ARE known about it, and these two disorders are pretty good examples. Ignoring people's replies and just repeating your original post in slightly different words isn't really a good way to back up your theories.