How Does Overfitting, Underfitting Work?

Imagine you're trying to guess what kind of candy is in a jar just by looking at it from outside, overfitting and underfitting are like two different ways you might try to figure that out.

Overfitting is like when you stare really closely at the jar, trying to count every single candy piece. You think you know exactly what's inside because you saw a few candies sticking out, but if the jar gets shaken up or the lid changes slightly, your guess might be way off. It’s like memorizing answers for a test instead of understanding the subject.

Underfitting is when you just say “it's probably chocolate” without even looking properly. You're too quick to make a simple guess and miss all the fun details, it might be gummy worms or sour candies! It’s like always picking the same answer on every question, no matter what.

The best guess is when you look carefully but not too closely, you notice patterns without memorizing every single candy. That's how smart learning works!