[jay_kyburz]

I have kids in high school. We sometimes talk about the difference between the black and white of math or science, and the wishy washy grey of the humanities.

You can be right or wrong in math. You have can an opinion in English.

[bmacho]

You can be right or wrong in math and philosophy. You have can an opinion in any other sciences, physics, chemistry, biology, medical sciences, history, you name it.

[greener_grass]

I suggest teaching them about the Problem of Induction [1].

Scientific thinking is not the same as mathematical thinking and it becomes quite wishy washy grey if you zoom in too far!

[1] https://plato.stanford.edu/entries/induction-problem/

[HDThoreaun]

You can definitely have wrong opinions in the humanities.