Jonathan Crabtree posted Aug 28, 2013 2:50 PM (http://mathforum.org/kb/thread.jspa?threadID=2592265): > > Jonathan has two apples. > One apple is taken away. > Jonathan has one apple in his room. > Jonathan's number of apples has decreased. > No negative apples have entered the room. > No physical matter has been added, just subtracted. > Neat!