This makes me raise the question whether it's possible to view wikipedia as per ...? I know i can go back per article - but can I browse wikipidea as it was in 2005?
It is not nearly enough to simply view an old revision from 21 years ago. It would be replete with broken templates, broken formatting, redlinks, and missing images, at the very least. And that applies to every single article, across the board, no matter what its content. The more comprehensive the article, the more broken it would look.