rocknbil - 6:37 pm on Mar 25, 2010 (gmt 0)
I don't know what it proves.
It proves only that the document will endure rough territory. Sometime we forget that it's not our place to dictate what our visitors do, they **shouldn't** use this and it's **not safe** to do that, but it's our job to deliver the content to them regardless. I have a contact that refuses to upgrade to FireFox, and is still using NN 8 . . . hence it's still installed on my system. For updates to his projects, I still check against it, though it's probably the only copy browsing the Internet (and, true to my original statement, when the pages validate, they're fine.) His checks are still good.
Visited a client last week and witnessed four 15" monitors in the office, for example. Outdated conditions exist, it's not about me as a developer, it's about them accessing the content I create.