If you say you're teaching someone how to catch balls, and then provide them with sequences of equations, there's a dangerous meta-message involved. You're conveying the (unspoken, implicit) idea that the equations are what's needed to make the student good at catching.

If the student then believes that because they've mastered the equations they've learned how to catch, they'll go out into the world - and fail and fail and fail.

One real-life example of this may be people who attain high status in martial arts training schools and then get themselves slaughtered in actual fights, where the only rules are those of physics and people have chosen optimized strategies for reality.