Walk through the wall

My husband and I have been discussing different concepts of reality. We were discussing what would really be happening if some one walked through a wall. Would it be
..To the person walking through who manifests there own reality there is no wall (there is no spoon) so they are merely walking the illusion is not theirs but the person viewing it who sees the wall that is not there to the walker
...The person is a part of the whole, they are part of the wall the wall is part of them and so it is simply being at one with the wall and then seperate again
...The person can can change themselves at a molcular lever as well as the wall and moves through the space the wall does not take up

There were many other ideas. It is an interesting concept. I would be keen to hear any others ideas here or email me.