ABSTRACT
Because psycho-analytic theories are a compound of observed material and abstraction from it, they have been criticized as unscientific. They are at once too theoretical, that is to say too much a representation of an observation, to be acceptable as an observation and too concrete to have the flexibility that allows an abstraction to be matched with a realization. The elements of psycho-analysis must have the following characteristics: They must be capable of representing a realization that they were originally used to describe and they must be capable of articulation with other similar elements. The author discusses the signs L, H and K, in Learning from Experience. They represent links between psycho-analytic objects. Any objects so linked are to be assumed to be affected by each other. The realizations from which they have been abstracted are usually represented by the terms "love", "hate", and "know".
