Everything you can see, touch, and feel is made up of atoms. Almost all of the mass of an atom is concentrated in its nucleus. Surrounding the nucleus is a whole lot of space with electrons and protons orbiting around.⁠ Electrons are both a particle and a wave. On the other hand, they have a negative charge. Particles are, by their very nature, attracted to particles with an opposite charge, and they repel other similarly-charged particles.⁠ This prevents electrons from ever coming in direct contact. Their wave packets can overlap but never touch.⁠ ⁠ _____⁠ ⁠ No matter how hard they try, two electrons can never touch. They just hover above each other.⁠ The same is true for all parts of the human body made of atoms. When you sit in a chair or lie in your bed, the electrons within your body are repelling the electrons that make up the chair; you are hovering above it by an unfathomably small distance.⁠ ⁠ If electron repulsion prevents us from ever truly touching anything, why do we perce...