In Serious Play, Michael Schrage writes, "Quantitative differences create qualitative differences. Make a commonplace material a dozen times stronger, and it becomes something else. Make a standard process a thousand times faster, and it becomes something else. Make a once-scarce resource a million times cheaper, and it becomes something else." Makes sense. Except: Isn't the relative strength, speed, or cost of something a qualitative difference, rather than a quantitative one? Hmmm...