Does anyone know the name of this book (might be a series)?
Planets are colonized by people having copies of themselves beamed to the planet. A person walks into a booth on earth for a few minutes and then goes about their life. On the other planet a copy walks out with all the memories of the original.
The story line was about how the lives evolve differently and the same limited number of people keep bumping into "themselves." I think I read it in the 70's but think it is older.