Two Types of Mental Confusion
I. The Duck-Spaceship Dualism
What is that?
A duck
But if a person sees this picture, whose mind is clouded by the fact that he thinks he knows, for reasons which he believes to be absolutely certain and irrefutable, that the image represents a spaceship? – Then he will not deny the evident form, he will claim that it is a spaceship in the form of a duck. If the object then waddles and quacks, too, he has no problem. He simply asserts that the spaceship has all the features of a duck.
II. The Wave-Particle Dualism
What is that?
The distribution of the amplitude squares of the oscillation state of a sphere with three nodal surfaces: one of them in the form of a plane through the center and two in the form of spherical surfaces.
But if a person sees this picture, whose mind is clouded by the fact that he thinks he knows, for reasons which he believes to be absolutely certain and irrefutable, that the image represents a particle? – Then he will not deny the evident form. He will claim it is a particle whose probability is distributed just as the square of the amplitude of the oscillation state of a sphere. If the object then has frequency and wavelength and interferes, too, he has no problem. He simply asserts that the particle has all the features of a wave.
