A simple experiment in falling particles. Starting x-coodinate is determined randomly. Simulation stops when a stack hits the top.
Directions: Turn on turbo mode, and run simulation. Looking at the "if touching color yellow" block: When the block falls, when it touches the yellow circle, it will turn 60 degrees and move 1 step until it is no longer touching the circle. This essentially creates a bouncing event, since when it touches the circle, it should turn and move away. However, you will notice that instead of bouncing off the circle, the block will get stuck in an infinite loop, spinning endlessly around at the edge of the circle.