DrPizza
Administrator Elite Member Goat Whisperer
If you were an apparition why would you need legs or to use legs for walking or running?
A related question: why can you go through matter in one dimension, but you don't go through matter in another dimension. That is, it can move forward through people and other objects, but the ground/flooring has magical ghost-proof properties that prevents the ghost from going in that direction and also allows the ghost to use friction between its feet and the ground to propel itself forward.