Strangeways lays out the implications of being a copy, as well as the usefulness of basic astronomical observation.
(Click on the image for larger size.
Invisible Girl, Heroine: Chapter Four, Page Four written and commissioned by Dr. Faustus of EroticMadScience.com and drawn by Lon Ryden is published under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.)