I'm wondering whether to push back a bit on this one with the teacher:

The class was talking about the bartering system that was used in America (we live in the Southwest where it was settled long before the east coast) in the 1600's, and the teacher said, "And imagine if you had an iPhone what it might be worth, and that people would bid on it higher and higher ..."

My son interjected, "Actually if you had a functioning iPhone in the 1600's, which is an impossibility in itself, they would probably think you were a witch and would execute you in the one of the ways they did witches in the 1600's, like burning at the stake."

The class laughed and the teacher pulled my son aside and told him he shouldn't be disruptive and needed to focus on the concepts being taught more.

My son told me about what happened today and said he still didn't understand why the teacher was mad, why the kids laughed at what he said, or why the teacher would think he needed to focus when what he was talking about was very focused...

ARGHHHH