40% is a number that I keep coming across when reading about people in America: people who think that the Earth is less than 10,000 years old and that dinosaurs and humans coexisted;
people who believe that carbon dioxide is not a greenhouse gas (indeed, that there is no such thing as the Greenhouse Effect). The same grouping is, also, unaware that Judaism is older than Christianity.
Furthermore, 40 percent of Trump's supporters believe Hillary Clinton is an “actual demon”. You can see where I'm going with this. Right?
I suppose I should be grateful that only 1-in-4 believe that the sun goes around the Earth.