What are constraints?

A constraint is like a rule that helps things stay organized and work better together.

Imagine you're building a tower with blocks. If you don’t have any rules, your tower might be wobbly or even fall over. But if you follow some simple rules, like you can only stack one block on top of another, then your tower stands taller and stronger. Those rules are constraints.

Think about playing on the playground. If there’s no rule, everyone might push and pull all at once. But if there's a rule that says "only two kids can swing at the same time", it helps keep everything fair and fun for everyone. That rule is also a constraint.

Just like blocks or playground rules, constraints help things stay in order, whether it’s your toys, your friends, or even big machines working behind the scenes! They’re not magical, they're just helpful rules that make life simpler.