Why do our brains remember some events vividly but forget others completely?

Our brains remember some events like candy and forget others like yesterday’s snack.

Imagine your brain is like a toy box, a big one, full of all sorts of toys. Some toys are shiny, colorful, and you play with them every day; those are the memories you remember clearly. Other toys are tucked away in corners or under piles of other stuff; those are the memories you forget.

When something happens that really excites you, like getting ice cream on a hot day, or winning a race at the park, your brain says, “Hey, this is important!” So it gives that memory a special spot in the toy box and adds extra glow-in-the-dark stickers to make it stand out.

But if something happens and you don’t pay much attention, like hearing about someone’s boring trip to the grocery store, your brain might just toss that memory under the pile of other toys, thinking “I’ll get back to you later.”

Sometimes our brains are busy with new stuff, like learning to ride a bike or figuring out how to tie shoelaces. That means there’s less room in the toy box for old memories, and they might be bumped out by newer ones.

So your brain uses special spots and glow-in-the-dark stickers (attention and emotion) to help you remember things, and sometimes, that’s all it takes!