These aren't really paradoxes but are not worthy of their own thread, so I'm sticking them in here.
We don't really touch anything. Burn yourself on a hot coal, stroke a cat, cut your finger off with an axe, swim in the sea, you haven't touched any of those objects. What you really feel is electromagnetism.
Light is invisible. Shine a laser through a vacuum, it's invisible. All we can see are the things light strikes, not the light itself. Those battles in space full of laser beams in films like Star Wars and Star Trek, it wouldn't look like that.