Originally Posted by cmac2012

Check out that guy's website, Iamamoron.com

I heard an interesting speculation years ago on the radio, wondering why the stones are on the outside. It seems like they would be more protected if lodged inside behind some bone or cartilage. They pointed out that the testes won't function/produce sperm if they are too warm, if they accidentally ascend up into the abdomen. So it would appear that having them on the outside has been a feature that was selected for or at least well accommodated. Hard to figure as damaged balls means: exit the gene pool.