When water freezes to ice, it becomes so strong that we can move over it. This freezing takes place of bonding between water molecules, the mass of water being the same. 1. Does it mean that we are virtually walking on forces? 2. Does it mean that forces are more important than mass because the solid structure (or even liquid or gaseous structure) of this universe is basically because of forces? 3. Are these forces energies of one or the other kind (I know energy and mass are interchangeable under special circumstance, but still force is a force and mass just mass under normal conditions)? If force is a form of energy, why don’t we call it energy? (Though for gravity we usually say gravitational force or gravitational energy, both meaning the same) 4. If we treat ice quantum mechanically, what would it deal with to a large extent? Force or mass?