Any time someone changes the way a society thinks, they add to the collective we call society. Galileo contributed a new bit of information that refuted the earth centered universe. Until he found the moons around Jupiter, no evidence existed that everything didn't go around the earth. If you look at what happens night after night it seems as if things are going around the earth. Simple observation without careful measurement showed us that was true. However Galileo's observations showed something else happened. How could those moons go around a planet and have the earth be the center of the universe. That is a profound change in thinking that affected everything at the time.