Despite the instructions explicitly saying not to I suspect many people (like me) could not help but “look through” the stated rule to infer its intent, especially for the more unusual examples. It’s quite a lot harder to imagine a real world rule that prohibits a carried skateboard vs one being used, even if both situations represent the same 2-vector in the rule’s truth table. It’s hard to turn off the part of your brain that applies past experiences to every new situation.