>>41
Then don't ask that. I'm not aware of any society that doesn't know what plants, water, the sun, hot and cold and so forth are. If you use abstract tests you won't draw on the concrete either.

That's not to say that designing such tests aren't fraught with such hazards.

>>39
Interesting. I'd like to hear more of this, particularly since human reaction time is so much slower than other species' because of processing overhead.