The Illustrated Guide to Criminal Law
Chapter 8: What Have You Done?
Page 6: Indirect Causation

Rube Goldberg-style diagram 

(1) Joe Irritates Pigeon… (making a silly face at an annoyed bird on a rooftop)

(2) Which Flies Into Face of Worker… (bird flies across street to a construction site, startling a construction worker high up)

(3) Who Drops Bucket of Rivets onto Board… (bucket falls a couple of stories to a teeter-totter of a plank)

(4) Launching Bowling Ball… (bowling ball flies up from the other side of the plank, back across the street)

(5) That Knocks Brick Loose… (bowling ball strikes top corner of yet another building, bricks fall away)

(6) To Strike Simon’s Noggin. (one of the bricks hits Simon’s head)