This is why it works like declaring two separate state variables!
**Custom Hooks let you share *stateful logic* but not *state itself.* Each call to a Hook is completely independent from every other other call to the same Hook.** This is why the two sandboxes above are completely equivalent. If you'd like, scroll back up and compare them. The behavior before and after extracting a custom Hook is identical.
**Custom Hooks let you share *stateful logic* but not *state itself.* Each call to a Hook is completely independent from every other call to the same Hook.** This is why the two sandboxes above are completely equivalent. If you'd like, scroll back up and compare them. The behavior before and after extracting a custom Hook is identical.
When you need to share the state itself between multiple components, [lift it up and pass it down](/learn/sharing-state-between-components) instead.
@ -2509,4 +2509,4 @@ Note that this Effect *does not* need cleanup. If you called `clearTimeout` in t