Not Playing With a Full Deck

Somebody once accused me of not playing with a full deck.  This left me rather confused, as we weren't playing cards (or any other game, for that matter), but discussing my blueprints to replicate the building from "Ghostbusters" that acted as a doorway to the underworld.   Now, if I had been planning to construct the building as a house of cards, his remark might have made sense - but that would have been a rather silly thing to do as playing cards don't make very good pan-dimensional conduits.  Some people really are just so addicted to gambling that they can't focus on anything else.