The PhD-student experiment, being performed mainly by the University of Groningen (RUG) involving 850 PhD-students, is currently being evaluated. Aim of the interim evaluation is to decide whether the experiment should be halted. However, University of Groningen is seemingly seizing the interim evaluation as an opportunity to expand upon the experiment with another 800 students. PNN is warning: the interim evaluation being performed by research agency CHEPS is characterized by interference and (the appearance) of bias. After repeated internal attempts of warning in vain, PNN sees no other way but to reach outward.