system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If a mirror reflects all light and the color white reflects all wavelengths of light then why is there a difference between a mirror and a white sheet of paper?

Also what is the difference?
gpt
If you drop a bouncy ball on a smooth floor like wood or even most cement, it will bounce straight back up. If you throw it at an angle, you can pretty easily figure out where it's going to bounce based on that. 

Now drop or throw the same ball outside on some rocky or uneven ground and the direction the ball will go is much harder to predict. Even a small change in where the ball hits the ground could send it off in a totally different direction. 

Now imagine we have a lot of balls and drop them at the same time making sure they aren't touching so they don't interfere with each other. On the smooth floor they will all stay in roughly the same positions relative to each other. On the rocky ground they will scatter everywhere. 

A mirror is very smooth while a piece of paper is much more uneven on the small scale that light interacts with it.