Can you prove from Science that Science is the only method of proving that?
Is this one of those "circular logic" puzzles?
http://books.google.com/books?id=8y-FVtrKeSYC&dq=against+method&printsec=frontcover&source=bl&ots=vBWE53Mt5E&sig=sTJQHGOG0jhfOd4Osm7lvMWV708&hl=en&ei=XtK_Ss7LK47utgPQ-_RA&sa=X&oi=book_result&ct=result&resnum=9#v=onepage&q=&f=false