I used to be able to walk around my house at night just fine -- weaving and dodging potentially hazardous corners and table legs with my mind's eye and memory to guide me. Now that everything is rearranged, I walk through in the dark and trip over absolutely everything! It's like one of those old cartoons where the screen is black but you know the cat and mouse are in there and can hear yelps/pots and pans clanging together.