 Listen to this. Early in his teaching career, Harvard archaeology professor Jason Err would sometimes show a photo of a human skull in class. A Raiders of the Lost Ark touch to get his students psyched for the work ahead. The first day of school this fall, students in his introductory level class will get a trigger warning. Quote, you will be seeing some human remains that might trouble you. If that's the case, this might not be the class for you. What did you think you were going to see when you took that class or took that major?