The double slit experiment shows light particles are a wave that assemble in your presence. And you didn't even have to say a word!
Quantum Mechanics Jokes
Stephen Hawking's best subjects were Physics and Maths. His worst was P.E.
Fineman, Einstein, and Schrodinger walked into a bar.
Fineman says, "It appears we're inside a joke."
Einstein says, "But only to an observer who saw us walk in simultaneously."
To which Schrodinger says, "If someone's looking through the window, I'm leaving!"