For an excellent discussion of the approaches outlined here and problem solving heuristics in general check out Polya's How To Solve It, it's a classic (http://

For an excellent discussion of the approaches outlined here and problem solving heuristics in general check out Polya's How To Solve It, it's a classic (http://en.wikipedia.org/wiki/How_to_Solve_It http://en.wikipedia.org/wiki/How_to_Solve_It)