Motley: Look out for that "unknown unknown"  I don't know what it is or whether it's there or not and don't really know if I know it's there or not.....or even know that it may be there or not..... I do know what I don't know and sometimes feel I don't know what I do know..... I hope this clarifies matters.  Gary Crum btw: Who's on first? or should that be "Who's on first."