yes you attacked my view on wp an i however one does not establish credibility by what looks credible one offers arguments and supporting evidence as to why it's credible you agree it's a professor's vacation blog blogs are not considered credible sources on wikipedia see wp verifiable anyone can create a website or pay to have a book published then claim to be an expert in a certain field for that reason self published books newsletters personal websites open wikis blogs forum postings and similar sources are largely not acceptable