The low-level thing that isn't understood is that intelligence is not progressive. You can not build up to it. Sure, you can forever continue to build better and better approximations of certain aspects of intelligence and pretend you're making progress, but you are not. Of course, there is great utilitarian value in those approximations, so we MUST continue to do this.

Still, my position is that NO progress has ever been made in the area of AI, and no progress will be made any time soon.

I'll take it a step further (in case I don't get enough downvotes for what I've written so far). I maintain that you CAN NOT build intelligence. You can only TAP INTO it. So the very direction in which all of our AI efforts are headed is a dead-end.