A stimulating research paper on the sociological characteristics of those most likely to believe fake news in Spain, based on a survey with n = 8000. Some fairly straightforward correlations, between partisanship for populist parties, inclination to conspiratorial thinking, and belief in fake news; also, those whose news diet relies heavily on social media proved more susceptible. Among the most interesting aspects of the experiment are the variation in the subject-area of fake news (medical, agricultural, geopolitical, educational/religious, political) and especially the study of the difficulties in correcting beliefs through fact-checking (including the risk for the correction to backfire, further entrenching belief in the fake news item).