Authors Bernardo Kastrup, Adam Crabtree, and Edward Kelly posed the above question as the title to their June 18, 2018, online article on multiple personality disorder (MPD), suggesting that MPD (now known as dissociative identity disorder [DID]) “might help us understand the fundamental nature of reality.”1 To prove the reality of MPD, they presented a case study of a woman with ten personalities, some of whom were blind and some of whom could see.2 As further proof of the reality of MPD, they cited a brain imaging study purporting to show that MPD/DID patients had different patterns of blood flow during “emotional” and “resting” states when compared to healthy controls.3 Things went downhill from there.
To prove the reality of MPD, the authors presented a case study of a woman with ten personalities, some of whom were blind and some of whom could see.