We don't all have to believe in the same feminism. Feminism can be pluralistic so long as we respect the different feminisms we carry with us, so long as we give enough of a damn to try to minimize the fractures among us. Feminism will better succeed with collective effort, but feminist success can also rise out of personal conduct.
The planets are never the same twice, they're always different, so they could compare the markings I had drawn with their current photographs and they knew that I was drawing what I was really seeing and it wasn't copied from somewhere.