Oh, don't worry about that. I habitually know (or am willing to find out) far more than I reasonably should about pretty much everything... it's all relative. So long as you mention next video that the robot boss arena used to have hooks, you're golden. Good catch on the arrows on the butterfly sprites, by the way; I only noticed those quite recently. (Do you have any evidence for saying they would go in Carrotus, or that supposition?)