Since my curiosity, before it got rushed off to the feline severe trauma ward, has been piqued by 'overhearing' via others' posts what would normally be hidden from me (thanks, guys), I feel obliged to respond. Without natural forces such as gravity, atomic repulsion, and friction which for some reason seems to have been overlooked, all of which are known and understood, it would be impossible to pick up a stone either by hand or lever.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'