Weston made a tunnel for his ball to roll down.
How to walk through walls using the 4th Dimension [Miegakure]
An explanation of how walking through walls would actually look like if you could move in 4D.
“Miegakure is a platform game where you explore the fourth dimension to solve puzzles. Our world is three-dimensional: width, depth, and height. But what if there was a fourth physical dimension that we cannot see, in addition to the other three?”
Visit the site here: http://marctenbosch.com/