Hi Ricardo,
Not sure where to start with this one, but its good topic. Lets start at the beginning. Or, is it at the end.......
As none of us have reached our gazillion birthday yet (and I assume no one at Seiko has either) as the human conditon does not really permit that to happen, I assume its all guess work. More than that though, they must have measured the frequency and interpolated the 100,000 year accuracy into the future and accounted for the GPS corrections to time. I am going out on a limb here, so help me if you can, but if its taking its timing from GPS sources and being corrected, then is it as intimated and setting a time standard? Its mearly being corrected by other time keepers, so is not better or worse than any radio controlled watch, even thoguh its super acurate to begin with and in between corrections.
I love maths and I use a lot of interpolation calcualtions in my profession. The one thing I can always say about this phenomena is; it could be 'out' by a margin by the time you get there, and is at best 'notional only'. Looks good on paper though.
Thank goodness I will not be round to see the watch on its 100,00 birthday. I wonder what state it would be in come that day. Do you think it would have corroded and disintegrated to dust by then, or be just merrily ticking away in its Zimmer frame in a corner?
Jim