Idealism is not antithetical to materialism. It is the converse of Realism.David Handeye wrote:Yes? Yes what? Are you really saying materialists believe that touching Einstein's brain they're touching Einstein's mind? Are you serious?Ginkgo wrote:Yes, this is the basis of the materialist explanation for consciousness. Materialists explain consciousness as nothing more than matter in motion. So yes, it it physical. In terms of tangibility, the argument is that if you can touch the brain you are touching the mind. Mind and brain are one and the same.
I don't think materialists could be as ingenuous as you're describing them.
The point is that idealists do believe concepts really existing, somewhere out of the world or inside objects; materialists don't. For materialists concepts are flatus vocis, just names, every materialist is a nominalist. No reasonable materialist could really think that touching a brain he\she could touch also the thoughts stored in it.
Idealism is perfectly at home with the idea that Ideas are materially stored in neural networks. In fact it insists that all experience is primary, and that external objects are only inferred from that experience.
Idealism does not deny a material world, it simply identifies that the evidence we have for a material world is wholly dependant on our senses.