Some of you may be familiar with the work of M.C. Escher and his ability to make stairs do seemingly impossible things. One of his most popular pieces, Relativity, depicts three distinct staircases forming a triangle. However, this triangular formation runs into trouble towards the top of the work, as the staircase seems to bend the laws of gravity and forces the brain to do a little extra work in processing what exactly is going on. I would encourage you to take a look for yourself.