No, I specifically made the proposal as I did to get an answer to the question, How much of the time does this article spend in a vandalized or erroneous state?. In other words, for a given interval, this article spends X% of the time being a bad source of information. (From which one can infer that one's chances of getting bad information from it, based on a random visit, are also X%.)
It would be interesting, I guess, to find out how many times it's been vandalized in some interval, but I think the number above would be a more useful metric. ==