Suppose in the Katko v. Briney case (Section 7.2 "Intentional Torts") that instead of setting such a device, the defendants had simply let the floor immediately inside the front door rot until it was so weak that anybody who came in and took two steps straight ahead would fall through the floor and to the cellar. Will the defendant be liable in this case? What if they invited a realtor to appraise the place and did not warn her of the floor? Does it matter whether the injured person is a trespasser or an invitee?