“Seth material” search engine (Jane Roberts)

2. For those who are interested: As soon as Seth mentioned the “psychological activity” of atoms and molecules, I was intuitively and strongly aware of connections between his statement and at least two principles of modern physics. Yet I hesitated. “I know my feelings are right,” I told Jane, “but how do I explain them in a few words and make any sense?” I was also constrained by the limits of my own knowledge. Especially, though, I sensed relationships between Seth’s idea on the one hand, and both the uncertainty principle of quantum mechanics and the principle of complementarity on the other.

The uncertainty principle, or the principle of indeterminacy (advanced by Heisenberg in 1927, and part of the theory of quantum mechanics), sets definite limits to the accuracy possible in measuring both the motion and position of atoms and elementary particles simultaneously; more importantly to my mind, for the purposes of this note, the uncertainty principle maintains that there is an interaction between the observer (with his instruments) and the object or quality being measured.

Jane is largely unfamiliar with the details of the uncertainty principle and the principle of complementarity, although the general ideas fascinate her. Her feelings for these works of science, then, are the same as those she has for the ether; see Note 1 for Session 822.