Resolving the "Twin Paradox" http://mentock.home.mindspring.com/twins.htm I've been trying to follow this unusual explanation to resolve twin paradox, which uses the lorentz relativistic velocity transformation equation to get the speed bob zooms off after Ann at,15/17 C. I can understand up to that point of the explanation and get the same value, however why does it take him 4 years to catch up with Ann at this speed? It's not explained. Maybe it's obvious? Help! (please no explanations involving the relativistic dopler shift equation).