  In this short review I present my personal reflections on QBism. I have no
intrinsic sympathy neither to QBism nor to subjective interpretation of
probability in general. However, I have been following development of QBism
from its very beginning, observing its evolution and success, sometimes with
big surprise. Therefore my reflections on QBism can be treated as "external
observer" reflections. I hope that my view on this interpretation of quantum
mechanics (QM) has some degree of objectivity. It may be useful for researchers
who are interested in quantum foundations, but do not belong to the
QBism-community, because I tried to analyze essentials of QBism critically
(i.e., not just emphasizing its advantages, as in a typical QBist publication).
QBists, too, may be interested in comments of an external observer who
monitored development of this approach to QM during the last 16 years. The
second part of the paper is devoted to interpretations of probability,
objective versus subjective, and views of Kolmogorov, von Mises, and de
Finetti. Finally, de Finetti's approach to methodology of science is presented
and compared with QBism.
