  This is an attempt to clarify certain concepts related to a debate on the
interpretation of quantum mechanics, a debate between Andrei Khrennikov on the
one side and Blake Stacey and R\"udiger Schack on the other side. Central to
this debate is the notion of quantum probabilities. I first take up the
probability concept in the QBist school, and then give my own arguments for the
Born formula for calculating quantum probabilities. In that connection I also
sketch some consequences of my approach towards the foundation and
interpretation of quantum theory. I discuss my general views on QBism as a
possible alternative interpretation before I give some final remarks.
