I trust it is reversed. left trust some concept and fighting for it, extreme guys never changed.(e.g., don't kill cute animals!!) right build a perfect model fo

I trust it is reversed. left trust some concept and fighting for it, extreme guys never changed.(e.g., don't kill cute animals!!) right build a perfect model for exist world, and fight for keep it. scientists work for find new theory -- it is a new concept, look so good! so scientists will move towards left, when they find theory do not work, they go back to mid. but sometimes they will walk too far to back...