I'm not sure why you believe that is a counterexample - it is anything but. That interpreter can still run code written against the original DOM APIs in the ori

I'm not sure why you believe that is a counterexample - it is anything but. That interpreter can still run code written against the original DOM APIs in the original syntax, as defined 22 years ago - around time the <noscript> tag appeared in HTML! Of course if mom and pop were using UUCP and an ADM-3A to fetch their mail, they couldn't view the images -- but all the infrastructure that allowed them to read mail at all could be repurposed without change, possibly including their modem (thanks, RS-232, introduced 1960), if they bought a 80386 desktop with a VGA card These are all interoperability success stories! Meanwhile, I need 19 different IM apps on my phone to talk to 19 different people. That's what happens when you ignore interoperability