I did laugh when I read this.
Just to clarify, I was referencing the work of Bernardo Kastrup. I wasn't suggesting that Fidel Castro was running a side-hustle in studying the mind-body problem with psychedelics (but, who knows?).
I would heartily recommend the curious follow up on that reference by reading 'The Idea of the World' by Kastrup - he deals with the research on psychedelics and neuroimaging in chapter 12.