Didn't Gruber co-design Markdown with Aaron Swartz[1][2]? Is there any reason why everyone refers to Gruber as Markdown's sole inventor/BDFL? What's Swartz opin

Didn't Gruber co-design Markdown with Aaron Swartz[1][2]? Is there any reason why everyone refers to Gruber as Markdown's sole inventor/BDFL? What's Swartz opinion on all this? [1] http://www.aaronsw.com/weblog/001189 http://www.aaronsw.com/weblog/001189 [2] http://en.wikipedia.org/wiki/Markdown http://en.wikipedia.org/wiki/Markdown