 If we talk about something that's a simple system, and you can navigate your way through trial and error, but you'll eventually get out of that maze. You'll figure your way out. And then if you ever go back in there, you know how to get in and out. You'll never make a mistake again as long as you drew a nice map. That's a linear example in a closed system, a simple system. Let's talk about nonlinear. Not exactly right here, but it works for my audience. If I gave you a shovel instead of string,