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 5