So the discovery process was "Ow! Haha, hey, put your finger there, you've got to try this!"<p>"Ow! Haha, hey, put your finger there, you've got to try this!"<p>"Ow! Haha, hey, put your finger there, you've got to try this!"<p>"Ow! Hey what happens if we put a shovel in it?"<p><CRACK><p>"FFFUFUUUUUUUU! Let's stop putting our fingers in that..."<p>And thus science marches on.