@Pythagorean,
are the laws all basically physical? Are they describable in terms of the movements of bodies?
---------- Post added 03-03-2010 at 02:13 PM ----------
OK here's a scenario for the evolutionary development of abstract thought. Imagine one of your ancient ancestors sitting by a campfire in the grasslands when a sabre-tooth lioness bursts into view. Instinct and adrenaline cut in, and he flees. Of course, do this would require nothing more than the brain recognizing the smells, sounds, and above all images reaching it as "lion!" and going into flight response.
And in this, he would be doing the same as any other critter.
Later, however, your great grandad does something no other critter can do: he remembers the lion and imagines a different course of action. What if, he thinks, he had picked up a burning branch from the fire and waved it in the lion's face? He imagines the various possibilities and decides the most likely is that the lion will retreat.
Next time a lion shows up, this is what he does. And not only does he survive, but by doing so, he becomes a Dominant Male, and all the women in the area are suddenly at his beck and call. And thereafter, he and his kind prospers.
It must have been something like this.