Just press the green flag. The dot will go on its own. When the dot reaches the blue border the code will stop. Random walking is actually a form of chaotic motion because you can't predict where the dot is going to go. ========================================= You can actually try out chaotic motion in real life! Roll a die, if you get 5 or 6 roll again. 1 means you move forward, 2 means you move backward, 3 means you go left, 4 means you go right.