How did Leonardo Da vinci change the world?

I don't think he really had an effect on the world as we would like to think. Today he is most know for being a painter and during his lifetime he was not taken seriously beyond art and invetion though mostly inventions of weapons(despite the fact that he despised war). He was largely criticized on his scientific findings(leave it to the church to do this), and after his death his notes were taken apart sold, given away, and some were probably destroyed. Some scholar argue that we now posses only from one third to one fifth of all of his notes. His discoveries in medicine alone would have earned him a name in the history books, but due to the lack of understanding of his contemporaries he work went overlooked. Leonardo was a man truly ahead of his times, and it's a shame that his contemporaries did not take him more seriously.