How do people understand algebra if they never encounter it?

In “Geometric Principles Appear Universal in Our Minds” (Wired Science, May 24, 2011) , Bruce Bower reflects on the fact that research among peoples who do not even count suggests that abstract geometric principles are probably innate in humans:
If geometry relies on an innate brain mechanism, it’s unclear how such a neural system generates abstract notions about phenomena such as infinite surfaces and why this system doesn’t fully kick in until age 7. If geometry depends on years of spatial learning, it’s not known how people transform real-world experience into abstract geometric concepts — such as lines that extend forever or perfect right angles — that a forest dweller never encounters in the natural world.
As always, we needn’t wait long for a Darwin answer: Read More ›