Mathematical figure. it was based on the difference in the doppler shift, which is a sign wave, basically, that shrimps or grows with the direction it goes. so while i respect certainly jeff's opinion, and i think it's really good that it's being questioned -- because who knows? maybe it wasn't done properly, since it wasn't released to us how they got this. but i'm just glad he did that. but i'm convinced that it is in the south, and i'm still convinced these are pings from the aircraft and from the black box. >> hey, mary, you know there's a belief that certain countries may be holding infor...