How Fast Can You Do It Without Making a Mistake?

You can create little games that you can create something like that. Another thing you can do with like, say, music, they make these little machines that actually will take a song you're trying to learn and slow it down. That's the important part. Right? Sometimes if they change the speed, it becomes low. It changes the sound, but they make little machines where the sound stays the same, but it goes slower. Now you're saying, okay, now I'm going to do 30%, now 50%, half speed. And you keep trying to go faster. Or maybe even like, you know, several chords 10 times and you have a timer and you do it and then