What is the law of diminishing marginal utility?

The law of diminishing marginal utility means that the more of something you get, the less happy each extra piece makes you.

Imagine you're eating your favorite candy bar, let's say it’s chocolate with nuts. The first bite is amazing, right? It tastes like happiness. The second bite is still good. The third one is okay. And by the time you get to the fifth or sixth bite, you’re probably thinking, “I can’t eat another piece, my tummy’s full!” That’s diminishing marginal utility in action.

Think of it like this: You have a backpack with 10 stickers. The first sticker you get feels super cool, it's brand new! But by the time you’ve stuck on the seventh or eighth, you're just going through the motions. Each one gives you less joy than the last because your backpack is getting full, and so is your excitement.

So, whether it’s candy, stickers, or even toys, the more of something you have, the less each extra one adds to your happiness. It's like a fun game that gets less exciting as you go on!