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Dynamic information is information that can change.

React components will often need dynamic information in order to render. For example, a component displaying a game's score will need to check the score before it can display it.

There are two ways for a component to get dynamic information: props and state. Besides props and state, everything in a component should always stay exactly the same.

You just spent a long lesson learning about props. Now it's time to learn about state. props and state are all that you need to set up an ecosystem of interacting React components.

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