I don't think she intended to constrain the books to a certain time period either-it is just that I have read people on the internet complaining about the lack of consistency with 1992 in COS, so I figured some people might through a fit with this.
From reading the Newsweek piece, it has become clear that Cuaron has forgotten a major point in the setting of the novels-Azkaban takes place in 1993 (I believe-give or take one or two years), yet he is dressing the actors in 2003 clothing. While Rowling's herself has slipped in her setting a...