I used to be a Catholic. I left because I object to conversion by concussion. If you don't agree with what they teach you get clobbered over the head until you do. All that does is change the shape of the head.
You can't get there by bus only by hard work and risk and by not quite...
You do have to change things as warfare changes.
I wouldn't change a single thing because one change alters every moment that follows it.
