Isn't this a classic issue in software developement, where you have to require or assume some minimum OS version? Remember all those labels: "Windows 95 or high

Isn't this a classic issue in software developement, where you have to require or assume some minimum OS version? Remember all those labels: "Windows 95 or higher required." And especially with web developement, where you'd have to test your site on a various number of combinations of OS, browser, and resolution.