Censorship
I do not know of any Wiki rule or policy that gives one editor the right to censor the contribution of another editor. If you have a problem with the contribution I am trying to make to the Clairvoyance article, please intelligently and articulately communicate your concerns on my Talk page. Simply clicking on Undo, as you have done before, is not science. It is censorship. If it continues I will have to commence DR action. Best wishes.