[quote=Dynamics] Well they probably move through the atoms. Electrons are small, you know. I really don't have a problem with anything possible. [/quote] I already know you don't dismiss [i]all[/i] of Quantum Mechanics. Just the stupid impossible stuff. Also, atoms can't move through other atoms. The electromagnetic field generated by the electron cloud repels other fields generated by other atoms, so no two atoms can take up the same space at the same time. So a barrier with atoms tightly locked together would be impossible for another atom to pass, since atoms are actually way bigger (relative to the nucleus) than you would think. I conveniently learned about the electron cloud a few days ago in my science book xD