When you buy a computer, there is some question of how much it costs, how cool it is, and how practical it is. Inevitably, into the question of ``practicality'' comes the issue of applications . How many people run Microsoft Windows instead of OS/2 or a Macintosh because ``that's where the applications are'' or ``that's what we use at work''?
What makes your car go? Gasoline. What makes your computer go? Software.
So tell me why you can pull into any gas station, pump the stuff in, and go on your merry way without worrying about its ``compatibility'' with your car. And then explain to me why it's different for software. There's no such thing as ``Ford Gasoline'' or ``GM Gasoline.'' Why should there be such a thing as ``Windows software'' or ``Mac software''?
There shouldn't, and that's where ``Write Once, Run Anywhere'' comes in.