7. Rubik’s Dimensional Cube

Photo by Denys Nevozhai on Unsplash

Perhaps already widely known, but the word simple comes from the word simplex, a noun that can be used as the opposite of complex. Simplex means one-fold, and when taking a sheet of paper and folding it once, it becomes obvious why we call something like that simple. The word tells us also that some of our ancestors envisioned a piece of paper and folded it once. They realized that this was simple.