the end of the story for most people. But we were confused because we also heard from others who would know that you can. So we did the extra digging to get to the bottom of the story, as I posted below.

Mostly likely, your child cannot do a double major at BYU. But there is a (small) chance that they might be able to get an exception.

So the hard "No" answer isn't quite the whole story, but is probably right.