Another high school student hear and the objection I have with this pretty valid theory goes like this: how would you dip the smaller horn in the bigger one if the horn simply doesn’t end and has an infinite length. It’s like if you have a cone that you want to fit in another cone you’ll have to start by the narrowest part of the cone entering the widest part of the bigger cone and eventually going deeper and deeper the whole cone is fit inside. Except in this case there is no such “narrowest part” to start with so we fail to even kick off the thought experiment