venstresida.net

Hmm... Etter litt tips fra en realistkamerat, kan kanskje dette være et hint:

Fra wikipedia: http://en.wikipedia.org/wiki/Twin_paradox
"As shown by Max von Laue in 1913, the process of acceleration is not as important as Langevin suggested, because the asymmetric aging is completely accounted by the fact that the astronaut twin travels in two separate frames, while the earth twin remains in one frame. Using Minkowski's spacetime formalism, Laue went on to demonstrate that the world lines of the inertially moving bodies maximize the proper time elapsed between two events."

Dvs. at vi kanskje kan tenke oss en tidsdilatasjon likevel, selv uten akselerasjon, og at det er helt OK i forhold til Generell Relativitetsteori.