Ray Saintonge wrote:
If you would rather that Susan make a visit to the library discuss it with her. Also take time to discuss the function of the talk page with her. It could very well end up that spending a half-hour doing this is more productive than a half-hour spent cleaning up the article. Either way there's no getting around spending the half-hour. [...]
I don't think it has to work that way. The half-hour comes from "wha? where did that come from"; studying article history, looking at editor contribs, comparing to other articles, etc - basically coming up to speed on a suspicious change. The editor making the original edit already knows what and why, so it would take much less of everybody's time to start from a cited reliable source. Fixing mistakes is part of the process, not entirely avoidable, but we don't actually have the capacity to fix up after a "bring it on, do whatever you want" policy (as witness the school articles).
Stan