The philosophers of the Middle Ages demonstrated both that the Earth did not exist and also that it was flat. Today they are still arguing about whether the world exists, but they no longer dispute about whether it is flat. ↗
I must confess, my Spanish is not so good - except I read a little, so I started with the English but then determined that it would have to be in Spanish. ↗
I would like to see the day when somebody would be appointed surgeon somewhere who had no hands, for the operative part is the least part of the work. ↗