Twin paradox: the real explanation (no math)

The Twin Paradox is the most famous of all of the seeming-inconsistencies of special relativity. In this video, Fermilab’s Dr. Don Lincoln explains it without using mathematics. This is a companion video for his earlier one in which the same question was handled mathematically.

Related videos:
https://www.youtube.com/watch?v=GgvajuvSpF4
https://www.youtube.com/watch?v=svwWKi9sSAA