I read the article and have one question. What SIGNIFICANT contribution have they made? You know, one that wouldn't have or hasn't been made by Europe or America? I mean, if they were all terminated during the Crusades, would they be missed? Just a question, not making a racial slur. Would the world be better off with or without them? Don't get me wrong, I have lived in the Middle East and have plenty of Muslim friends, but I also see all the problems that this world has faced that are related to radical Islam, for centuries.