I really enjoyed this article. I do take issue with a couple of sentences: "We hear in stereo 3-D." This is not true unless we move our heads. We hear in one dimension, left-to-right. "We hear better than we see." This is an apples-to-monkeys comparison.
While our localization abilities vary by axis, we do have them in all three directions due to the combination of several mechanisms, none of which are actually 'left-to-right'.