Wikipedia:Sockpuppet investigations/Yohan Castel/Archive

Suspected sockpuppets



 * Tools: Editor interaction utility • Interaction Timeline • User compare report Auto-generated every hour.

These accounts are all obsessed with adding very similar, poorly sourced, synthesized material on neurobiology to sex articles. This material discusses the same things - rodents, lordosis, pheromones, then evolution into hominids, rewards, cognition, culture. These accounts use the same sources, especially promoting the work and even doctoral thesis of Serge Wunsch, an obscure researcher who gets almost no cites other than from himself  and has zero publications on PubMed. The accounts also use the same pictures, uploaded to Commons by Yohan Castel. The many problems with the material added by these accounts are discussed here:  Yohan Castel faced criticism and pushback from other editors for his material;  when JaKomensky appeared, one of those editors suspected him of not being new, but JaKomensky did not admit any previous account. It seems clear that the name changing is an attempt to evade scrutiny and to make it appear that there is greater support for certain ideas. Yohan Castel has been adding the same bad material, and more, extensively to French Wikipedia, including the very fringe idea that sexual orientation is learned, and has been active there up until last year. Additionally, some of Yohan Castel's pictures appear to be copyvios of Wunsch's work (for just one example, compare with p. 135-136 of ) and he has committed copyvios 3 times before. His pattern at both French and English is to go dormant for long time periods, but then to reappear; we appear to be in a dormancy period at the moment. Suggesting global block to prevent any more problematic behavior across Wikimedia sites. -Crossroads- (talk) 03:07, 18 August 2019 (UTC)

Please do not close. As I said, this user always returns after their dormancy period. If CheckUser is stale, can't we do a behavioral investigation? They will come back, and be a problem again. They have still engaged in sock puppetry and are very problematic otherwise. And Yohan Castel posted on French Wikipedia as recently as one year ago. -Crossroads- (talk) 14:50, 18 August 2019 (UTC) updated -Crossroads- (talk) 16:09, 18 August 2019 (UTC)

Comments by other users
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I also view the accounts, including, and the IP, to be the same person. And it seems maybe Seppi333 does as well. The operatator of these accounts was recently discussed at Talk:Human sexuality. Although the CheckUser data is stale, the behavioral evidence is worth considering. And, as noted by Crossroads1, this person is likely to return. They return sporadically. Flyer22 Reborn (talk) 20:48, 18 August 2019 (UTC) Flyer22 Reborn (talk) 20:51, 18 August 2019 (UTC)

Clerk, CheckUser, and/or patrolling admin comments

 * None of these accounts have edited in 2.5 years at the most recent. They're stale both from CU perspective and there is no reason to block. Closing case. TonyBallioni (talk) 12:22, 18 August 2019 (UTC)