I took this statement: 'The caretaker tells you each, individually, that together you can see either 18 or 20 statues. ' as being: size(see_A) + size(see

I took this statement: 'The caretaker tells you each, individually, that together you can see either 18 or 20 statues. ' as being: size(see_A) + size(see_B) = 18 or 20 as opposed to: size(see_A union see_B) = 18 or 20 i would have assumed they would add the word distinct if they wanted to not double count overlapping statues.