Two comments from students hit me this week.
In one discussion a student said: I’m from xxxx. When I moved to Maine, I couldn’t believe it when my roommate said she didn’t have health insurance and didn’t go to the doctor until she got pretty sick.
In the other case, a number of students said: We didn’t learn much, well, practically nothing about the Reconstruction in high school.
There are any number of differences between these two comments but they have one thing in common: They suggest that a chunk of what people know simply comes from inadvertant exposure.