Imagine you are building a big castle full of traps and hidden doors. You are building a door with a trap in front of it. But you can't separate the trap from the door because the wire for the door block the way for the trap and you don't want to connect it. How do you solve this problem? I tought it would be useful if you had different wires, some blue ones, some red ones and some green ones. You use the red wires for the door and the blue wires for the trap. The red wire wont connect with the blue wire even if the overlap each other. This would be really amazing if you do a lot with wires, you don't need to worry about the wires you want the separate connect to each other . I hope you understand what I mean. Let me hear what you think of it!