« on: 14/06/2021 18:57:47 »
What does HF see on her display? Does HF see that she is now slightly younger than 20?
Since my argument makes use of very small (unspecified) quantities,
it could be argued that time delays due to the speed of light might also need to be taken into account when describing what the HF sees on her display. But I think any such concerns can be addressed by pointing out that the separation "d" between him and her can be made arbitrarily large, and CMIF simultaneity says that the amount of negative ageing that occurs is proportional to their separation. Since the errors involved due to the finite speed of light between her and the HF are independent of the distance "d", those errors become negligible for sufficiently large "d".