Okay, so I don't know if this link will come through ok or not. The graphic fascinates me because I don't understand if it's just a cute little trick of base 10, if it's a symptom of how humans talk about numbers, or reflects some mathematical principal. In other words, my question is...."why"? To which perhaps the answer is simply "why not?". Any math types out there care to essay an answer? http://media-cache0.pinterest.com/upload/43065740156861377_dyzcgFdi_f.jpg Julie Krueger