Tetrad Theories

Here is a table to describe some of the tetrads we have discussed so far in this blog.


The first column is our friend Structured Query Language (SQL). The second column is the four components of physiological and psychological health. The third column is the tetrad of McLuhan’s Laws of Media. The fourth column are the Zachman Framework’s four perspectives. The fifth column are the first four Structured Development Lifecycle (SDLC) phases.

The rows in the table correlate the similar facets of each of the tetrads. I will go into detail in a later post. How does energy, matter, location and event correlate? How do the Secrets of the Universe of Discourse correlate? How does data, information, knowledge and wisdom correlate? How does colon classification correlate?

Take a moment and let yourself stretch.


Quadrant Theory

Judah Thornewill predicts: “Major online internet useage research firms will record that over 3 billion people in 2025 managed their incoming and outgoing digital information using a graphical user interface based on Quadrant Theory – as described in Marshall McLuhan’s “Tetrad” model in Laws of Media, Ken Wilber’s Holon in Sex, Ecology Spirituality, and R Buckminster Fuller’s Tetrahedral structures in Synergetics.”


I think this is an interesting prediction by someone trying to develop a product based on an unexplained concept. However the project appears to have vanished along with the website. What I plan to glean from it is Ken Wilber’s work. I plan to give it a read.