How many years of your life have you spent working on a software with a large user base? I humbly submit this number must be very low, because fixing a bug in

How many years of your life have you spent working on a software with a large user base? I humbly submit this number must be very low, because fixing a bug in a widely deployed product is not as easy as you believe it is. For instance maybe fixing the bug in crashie8.com would break a lot of websites relying (indirectly) on that bug. It's easy to have your very own definition of "modern" and then say "This is not modern, because modern means having a yellow status bar". Actually when you said that PHP is a modern language I must say that your definition of modern sounded pretty different than mine. Lastly, I challenge you to find a single currently working crash-the-computer bug in IE9. Crash the tab, yes. Crash the browser, maybe. Crash the computer, very unlikely.