The baseball example really is not apt.

Golf, however, is a much better example. Like bicycle manufacturers, golf companies spend millions of dollars every year designing new clubs and balls. (Did you know they employ physicists to create dimple patterns to reduce the drag of a ball as it flies through the air? I'd guess that is where Zipp got the idea for dimpled rims, but I digress.)

And do you know what has happened over the last 50 years? Golf scores haven't come down, but that is due largely to changes being made to golf courses. Take the Augusta National, for instance. They keep making the course longer and more difficult to keep up with the advantages gained by new equipment, and of course, better training. The scores aren't all together different, but the course sure is.