[KarlKost]

Actually, now that I've come to think about it, this trait is not so absurd... For example, very old imortal vampires from the time of Rome could have TL from 2 to 8, time travelers that never stays too much in one time for... Too long? Ever since birth (my mother time-traveled with me since before I had my first gradson ya know, so I dont even know when I will be born...), and ancient AIs or gods could all have seem the change of TL from the civilizations (an AI could still have the memory from the beggining of TL 10, even if it lives now in a TL 12 society, so it would have familiarity to TL 10, 11 and 12)