[yanjuk]

Yeah I think it could only be implemented on a new forum, right at the start. No doubt it would bring a different set of problems for moderators.

To those people (not you) "who see downvoting as a legitimate way of showing disagreement" I would say that it's too lazy. Better instead to try to explain why something is wrong. Then we can look carefully and objectively at the explanation rather than at the score or the expert/layman status of the author. Also many disagreers would find themselves unable to explain why they don't like some idea and might even change their minds.