your 1. assumes that in the process of getting to that speed we dont learn to over come time dialation. in my original statement i stated what you are saying. prior to being insulted and told i know less than nothing.

2. i dont know if doppler shift is the proper term. they do see each other being forshorten in the direction of the movement. doppler is more related to frequency.

i am assuming that you are talking about a large differnce in speed, rather that them having a difference of a few feet a minute.

the more man learns, the more he realises, he really does not know anything.