I notice that the ideal causal diagram used in Part 2 (and based on pearls) is isomorphic to an example I use to teach CLIP, once you apply the substitution:

sprinkler on -> a paperclip truck has over turned
rain -> a clippy has haphazardly used up a lot of metal wire
sidewalk wet -> paperclips are scattered across the ground
sidewalk slippery -> many paperclips need to be moved to the safe zone