In this text with four parts, I tell the Why, How, Where, and When of the fact that Dr. Deniz Erdogmus is a charlatan. (Turkish)
4) When is Dr. Deniz Erdogmus a charlatan?
Dr. Deniz Erdogmus keeps groups of PhD students around himself abusing their trust to maintain a superficial appearance of substantial scientific activity, despite the actual non-existence of any real scientific activity. He can only subsist his charlatanism because those students around him would like to believe that the contrary state of affairs is the case. Without the active presence of students his charlatanism will be over.
Every state of affairs is relative: What is the case at the present has dependencies with what could have been the case otherwise.
The relativity of a state of affairs engenders its universal quality. The universal significance of something can emerge only with respect to what could have been otherwise. In philosophy, this dimension of alternative potentialities is called counterfactuality. 
The status of being a PhD student in a university gains meaning with respect to two main dimensions of relativity:
1) The (non-actualized) potentiality of not being a PhD student in that university.
2) That a PhD thesis is eventually meant to be addressed to a scientific community.
In the case of the second dimension of relativity, the counterfactuality of the state of affairs is immanent to the scientific addressee of the PhD thesis. It’s not localizable at the inside//outside boundaries of a university.
Dr. Deniz Erdogmus is a charlatan because he forecloses the scientific addressee, so that the PhD theses by his students are addressed to none other than Dr. Deniz Erdogmus himself.
PhD theses that are not addressed to a scientific community cannot have universal significance. Such PhD theses cannot be considered to constitute scientific activity. They are “technical” work at best, if one can call it a “technical problem” to satisfy a charlatan.
In the absence of a proper scientific addressee, the first counterfactual dimension of inside//outside becomes dominant, and the students’ sole focus becomes their physical presence in a “lab” within that university.
Dr. Deniz Erdogmus practices his charlatanism and abuse of trust through the physical presence of his students in the “lab”.
Without the active presence of students his charlatanism will be over.