Board Thread:Questions and Answers/@comment-24172144-20140818232341/@comment-5313287-20140826025458

I remember when Earth 2 started as a series and I was taking to Tupka about where to put certain characters appearing in the series, whether I should put them in Earth-2 or make new pages. He decided that we should just go with new pages because the Earth was drastically different. That was the around the beginning of Prime Earth pages as well.

If anything started the whole Earth " " (Insert Number) thing it was around then