This program is much more important than it may appear at first glance because of the simple fact that if you don't believe something is possible, you won't try to do it. And without that action, it become absolutely impossible to achieve - even if you were actually wrong about it being impossible in the first place!
Conversely, if you accept the idea that everything is possible, you will look for a way to accomplish your goal regardless of whether the challenge appearsto be impossible. And if you look at history, you''ll find that the greatest names are the ones who stood firm and accomplished what everyone else said was not possible because they believed it was, and kept trying.