Judge cites Wikipedia page in decision

I know. It's crazy. In law school, we're taught to pay attention our citations and make sure that we're cited credible sources. Then a Appeals Court judge pens a decision and cites a transient page from Wikipedia as an authority. I have to wonder: is he just ignorant that anyone can alter Wikipedia pages on a whim or does he actually think the content on Wikipedia pages are authoritative?

The Register, a great source of news, published this article that alludes to the decision. Here's an excerpt:

Judge Rushing cites Wikipedia as a source, a mistake which earns students an 'F' grade today. He talks about the need to disregard economics and sociology in favor of a "memetic marketplace" - whatever that is - and allows himself some flights of technological rapture.

I agree with the sentiment but I disagree with the punishment. Any student who hands in a paper that cites a Wikipedia page as a source should get be severly penalized but I don't think it necessarily and absolutely warrants an "F".