Why cant you roll a cube in a floor?

You can't roll a cube on a flat surface because its edges and corners prevent it from rolling smoothly. Unlike a sphere, which has a continuous curved surface that allows for easy rolling in any direction, a cube has flat faces and sharp edges that cause it to tip or slide rather than roll. As a result, the motion of a cube would be more about sliding or pivoting around its edges rather than rolling in a continuous manner.