Rhombic tiling, permutation plot, subset gamegraph, permutahedron, hyperplane arrangement, structure diagram, three-dimensional heap, Cayley diagram, braid graph, and L-tromino tiling.

There’s no real mystery about this at the moment. This is what we want now. It may prove wrong later, but we’ll correct that when we come to it.

From “The Mentat Handbook,” Children of Dune by Frank Herbert