Haven't you ever realized that you step on a place where someone died? You are stepping on people who didn't get a grave, they just laid there and wasted away into thin air. You are always stepping on someone's grave, the rain may have washed away the evidence, but it is still there. Just like they said, you never step in the same river water twice, it does go away. Yes, a lot of them probably are in heaven or wherever, but some of them may be watching you learn about them or just not even caring about them. Just remember, you mght be hurting the deads feelings, just remember the dead and the living have feeelings so, yeah! :D bye