Jun 8, 2026 · 2 hr 12 min · 13 segments
Hüseyin Beyköylü left medicine for cognitive science after an LSD experience, and five years later he's arguing that mainstream psychology and neuroscience are built on assumptions that systematically…
Hüseyin BeyköylüGuestTiagoHost
One with John Verveke and Daniel Meyling, and another one with Michiel van Elk, who is my current supervisor, and Julian Tiverstein, both for the same issue in philosophical psychology.

It was a special issue on mystical entropy that both papers were published late last year, so November, December.

And then there is another preprint out that we are currently revising submitted to Phenomenology and Cognitive Sciences.

And we kind of revised that 4P model through an inactive, non-dual and reflexive perspective.
Okay, awesome.
So maybe let's start with the 4P model that you just mentioned, because...
As you know, this has also been, you know, massively influential for me.
And also, you know, probably a lot of people on this podcast have a decent overlap with Ravik as well.
Probably a lot of fans of his work here as well.
So, you know, there's a decent degree of familiarity, but just in case there isn't, just to establish a little bit of the ground before we get into some other stuff.
You know, the average person, when they think of knowledge, they think of knowing facts, right? And so on this paper, and Raviki more broadly has always given kind of this concept of propositional theory.
So maybe just unpack that a little bit.
And what are the other ways of knowing that people are missing if they're stuck on this model?

Right, so John and his collaborators, mainly Christopher Mastropietro, have been developing this 4P model for the last decade or so.

And the context for the development of this model was, as you said, exactly what John refers to as propositional tyranny in Western thinking.


And I think this is a remnant of more recently positivism, rise of positivism, and trying to find the kind of established grounds for knowing in logic, essentially, which
is very

And John is certainly not the first person to point to non-propositional kind of knowing.

One with John Verveke and Daniel Meyling, and another one with Michiel van Elk, who is my current supervisor, and Julian Tiverstein, both for the same issue in philosophical psychology.

It was a special issue on mystical entropy that both papers were published late last year, so November, December.

And then there is another preprint out that we are currently revising submitted to Phenomenology and Cognitive Sciences.

And we kind of revised that 4P model through an inactive, non-dual and reflexive perspective.
Okay, awesome.
So maybe let's start with the 4P model that you just mentioned, because...
As you know, this has also been, you know, massively influential for me.
And also, you know, probably a lot of people on this podcast have a decent overlap with Ravik as well.
Probably a lot of fans of his work here as well.
So, you know, there's a decent degree of familiarity, but just in case there isn't, just to establish a little bit of the ground before we get into some other stuff.
You know, the average person, when they think of knowledge, they think of knowing facts, right? And so on this paper, and Raviki more broadly has always given kind of this concept of propositional theory.
So maybe just unpack that a little bit.
And what are the other ways of knowing that people are missing if they're stuck on this model?

Right, so John and his collaborators, mainly Christopher Mastropietro, have been developing this 4P model for the last decade or so.

And the context for the development of this model was, as you said, exactly what John refers to as propositional tyranny in Western thinking.


And I think this is a remnant of more recently positivism, rise of positivism, and trying to find the kind of established grounds for knowing in logic, essentially, which
is very

And John is certainly not the first person to point to non-propositional kind of knowing.
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