That was gross.
On a related note, one of my kids learnt about how phrenology was once used for scientific racism and my other kid was shocked, dismayed and didn't want to believe it. So I had to confirm that yes people did that, yes it was very racist, and yes they considered themselves scientists and were viewed as such by the scientific community of the time.
I didn't inform them that phrenology and scientific racism is still with us. There is a limit on how many illusions you want to break in a day.