WE'RE IN THE POSITION OF A VISITOR FROM ANOTHER DIMENSION WHO COMES TO EARTH AND SEES A CHESS MATCH.  ASSUMING HE KNOWS IT'S A GAME, HE'S GOT TWO PROBLEMS: FIRST, FIGURE OUT THE RULES, AND SECOND, FIGURE OUT HOW TO WIN.
 NINETY PERCENT OF SCIENCE (INCLUDING VIRTUALLY ALL OF CHEMISRY) IS IN THAT SECOND CATEGORY.  THEY'RE TRYING TO APPLY THE LAWS THAT ARE ALREADY KNOWN.

                     -- SHELDON GLASHOW, 1979