We have borrowed from the a invention of a doomsday (analog) clock displaying a certain number of minutes before midnight that was developed many years ago by our physicist colleagues and maintained over the years by Stephen Schwartz, publisher of the Chicago-based Bulletin of Atomic Scientists and placed on the cover of their journal every month to represent the estimated number of minutes remaining before the initiation of an all-out nuclear war. By the way, as of February 7, 2003, this clock now stands at "seven minutes before midnight," and it has been shifted either forward or back many times over the years as world tensions have either increased or diminished.
Similarly, the GRG has adopted a digital clock icon that will count down from time to time, as we approach the capability for a true "right-shift" intervention in the aging process. For calibration, on this clock, one minute represents approximately one year.
By the way, the GRG Clock has not changed once, since it was invented four years ago. If you think it should be decreased (or increased), please let us know.