If you live in the United States, you probably live in a school district that is dominated by people who don’t publicly accept evolution. Over the years, teachers and School Boards have found ways to undermine the teaching of evolution to appease the parents that have pitchforks and charmingly Neolithic views of reality. Some districts have even placed evolution disclaimer stickers in biology textbooks (the top left sticker is from Cobb County, Georgia, and my inspiration for the rest of them).