ELI5: Explain Like I'm 5

Smoothing problem

Okay, imagine you are drawing a picture, but your hand is shaking a little bit. If you want your picture to look really nice and smooth, you will need to use a trick called smoothing. This means you will use something called an eraser tool to get rid of the shaky lines and make them nice and smooth.

Now imagine a computer is also drawing a picture, but it has the same problem as you – it sometimes draws shaky lines. Just like you, the computer can use the smoothing trick to make the lines look nice and smooth. This helps the picture look really good, just like how your picture can look good if you use the eraser tool.

But sometimes, the computer has a problem where it does TOO MUCH smoothing. This means that it erases too many lines and the picture ends up looking different than how it was originally supposed to look. This is called the smoothing problem – it's when the computer does too much smoothing and changes the picture too much.

So, the computer needs to learn how to balance smoothing with keeping the original picture as much as possible. Just like you need to learn how to use the eraser tool carefully to keep the original picture and just make it look smoother.