Structural differential

The structural differential is a physical chart or three-dimensional model illustrating the abstracting processes of the human nervous system.

Created by Alfred Korzybski, and awarded a U.S. patent on May 26, 1925,[1] it is used as a training device in general semantics.

In these cycles, we return periodically or eventually to "silence on the objective levels" (our ground) before moving on to the higher orders, i.e., before bursting into speech or theory.

The general semantics discipline was founded by Korzybski, who gained recognition first with the publication of Manhood of Humanity (1921) and then Science and Sanity (1933).

We can hardly refrain from describing things altogether, but we can bear in mind that we could append to any name or description the word "etc.

ETC magazine was founded by Hayakawa, who was a professor at San Francisco State College and member of the U.S. Senate during the Carter administration.

His Language in Thought and Action, went through several editions and is concerned in part with the confusion of words with reality.