B bountyhunter Well-Known Member Sep 12, 2009 #41 One of my teachers likened it to pushing a marble in one end of a tube that is stuffed full of marbles. You push one in the end and one falls out the other end, but it's not the same marble. Last edited: Sep 12, 2009
One of my teachers likened it to pushing a marble in one end of a tube that is stuffed full of marbles. You push one in the end and one falls out the other end, but it's not the same marble.