  This paper deals with Nancy Cartwright's views on the measurement problem in
Quantum Mechanics, as exposed in her book {\it{How the Laws of Physics Lie}}.
She does not accept the logic of Quantum Mechanics. It is argued that her
proposals, which are at variance with many facts results and epistemics of
Quantum Mechanics are the result of her choice of classical logic, which leads
her to propose the transition rate as the fundamental object of Quantum
Mechanics. I argue that this is incorrect. The positions which Nancy Cartwright
defends on the reduction of the wave packet do not address the fundamental
issue, i.e. the duality of a world where quantum and classical objects coexist
and interact. I suggest that the main problem with Nancy Cartwright's positions
is her difficulty in accepting that the contradiction at the basis of Quantum
Mechanics, i.e. the simultaneous corpuscular and wave-like nature of quantum
objects, is a fact of nature. Recent experiments, described in this paper, shed
a new light on the foundations of Quantum Mechanics and on the topic of this
paper. The limits of the no-contradiction principle are discussed; modern
dialectical materialism is argued to offer a useful framework for the interplay
between knowledge and reality.
