<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Why don’t ghosts fall through the floor if they can walk through walls and glide downstairs?
<|assistant|>
Ghosts may be able to walk through walls and glide down stairs, but their mass would still allow them to fall through a floor if they were simply pushed from the other side. Since they have a physical form, their weight must still be taken into account. This could also explain why they often leave visible trails behind as they pass through objects and move through walls.