Intelligent Design Irreducible Complexity

This amazing Rube Goldberg device happened just by accident in a mindless universe, you know

Sean Pitman: After all, anyone who has watched cartoons as a child knows what a Rube Goldberg machine is and that this machine will not work if any one part is removed. So, how can something evolve in a stepwise way where each step is functionally beneficial if there is no function until all the parts are in place?