what’s quantum theory put simply as if i were five

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Everything around you is made of tiny, tiny pieces - like magic sprinkles! These are the building blocks of everything in our world. Quantum theory is just the special rulebook for how these tiny sprinkles behave. These tiny pieces don't follow the same rules as big things like your toys. They act in weird ways that seem like magic! A regular ball can only be in one place at a time, but quantum particles can be in many places at once, like they're playing a special game of hide-and-seek. Sometimes these tiny particles can be in two places at once! This is called 'superposition' - it's like being able to play on the swings and the slide at the same time! A regular ball can only be in one spot, but quantum particles can be in multiple spots until we look at them. It's one of the weirdest and most magical parts of quantum theory. Quantum particles can also be 'entangled' with each other! This means they're connected in a special way, even if they're very far apart - like magic friends who always know what the other is doing! When we measure one particle, the other particle instantly knows and reacts, no matter how far away it is. Einstein called this 'spooky action at a distance' because it seemed so magical! Let's remember what we learned about quantum theory! Everything around us is made of tiny, tiny pieces that are like magic sprinkles. These tiny pieces follow different rules than big things we can see. They can be in many places at once - that's called superposition. They can also be connected in magical ways even when far apart - that's called entanglement. Quantum theory is just the special rulebook that scientists use to understand how these tiny magic sprinkles behave!