I just called a question silly. I'm mad at myself for doing that. The person who asked is teaching math, but they are a high school teacher who may not have a math degree. There are many people teaching math as long-term subs, who aren't math experts.
Yes, that question was probably better posted in mse, but he didn't know that yet.
It seemed silly to ask if one line is longer than another. But if he is wondering something about infinity, that's not silly at all.
I chose to moderate here because I wanted this site to be welcoming to people who are homeschooling, or teaching elementary school. I blew it today.