You may have heard someone disparage evolution because it's "just a theory." Gravity, on the other hand, must be 100 percent real — it's a "law," after all. It's so thoroughly proven, you might even call it a "scientific fact." Unfortunately, all of these common impressions aren't quite right. The words "fact," "hypothesis," "theory," and "law" have very specific meanings in the world of science, and they don't exactly match the ones we use in everyday language.
Written by Ashley Hamer July 27, 2018
Wake up with the smartest email in your inbox.
Our Best Articles Daily