I think there's a difference between the presenter being wrong versus a way they could do it better.
If the presenter is wrong, a polite correction/adjustment can be fantastic.
If the presenter is just.. inefficient? Then maybe it can be turned into a learning experience involving but not embarrassing the presenter. Then the guy walks away thinking "wow, so-and-so taught me how to do this even better!"
If the presenter is wrong, a polite correction/adjustment can be fantastic.
If the presenter is just.. inefficient? Then maybe it can be turned into a learning experience involving but not embarrassing the presenter. Then the guy walks away thinking "wow, so-and-so taught me how to do this even better!"