June | 2013 | Equivalent eXchange

What are dark matter and dark energy? We do not know; we just know of them by their effects.

Dark matter is thought to be present in halos around galaxies since the estimated amount of matter is too small to keep the galaxies rotating at their measured rate. Dark energy is thought to be present in the empty spaces between galaxies pushing them apart because the velocities separating them are actually increasing instead of slowing down. Nobody knows what dark matter and dark energy really are, but new theories are often being suggested. Perhaps one of these theories will be tested soon and we will have a better idea of what these mysterious materials and forces are.

Could it be that dark matter and dark energy are linked by an equation, like normal “light” matter and “light” energy? For ordinary matter and energy, which are really two aspects of the same thing, it is Einstein’s famous equation: E= m*c^2. But since we have no idea what the dark stuff is, we can only conjecture.

Why should we care what these things are that are so difficult to characterize? In any scientific investigation, if we have gaps and inconsistencies in our knowledge and our theories it just bothers us to no end. We’re just not happy until we figure out the puzzle. In this case, the universe is almost completely made up of these dark parts, so it seems pretty important.

Unfortunately in my diagram the horizontal axis is light energy-dark energy, which is separating, and the vertical axis is dark matter-light matter, which is combining. In many of my fourfolds the horizontal axis is combining or conjunctive and the vertical axis is separating or disjunctive. Is the energy-matter dual more important than the conjunctive-disjunctive dual? Perhaps this fourfold doesn’t really fit but I like it anyway.

Further Reading:

http://en.wikipedia.org/wiki/Dark_matter

http://en.wikipedia.org/wiki/Dark_energy

http://science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy/

Eric Chaisson / Epic of Evolution

Here are some additional fourfolds from philosopher Richard McKeon.

McKeon wrote much on the subject of rhetoric. A favorite fourfold of concepts was that of Things, Thoughts, Words, and Actions. He called these “commonplaces of inquiry” or “places of invention and memory”. Two rhetorical devices he used were amplification and schematization. Amplification can extend the scope of, for example, words to the other three, similar to the principle of indifference. “Objectivity is the inclusive principle of indifference by which it is recognized that being is grasped only in what we think, and say, and do about it.” [1] Schematization was used to identify and distiguish, for example, commonplaces. Thus I think amplification is a conjunctive device, and schematization is a disjunctive device.

Another fourfold of subjects by McKeon was Topics, Themes, Theses, and Hypotheses. McKeon wrote, “Speculation concerning discourse must avoid the fixities of categories, doctrines, methods, and assumptions which discourse assumes in any one form of philosophy or inquiry, if it is to include all the forms which discourse takes in philosophy and in inquiry, action, and production. This is possible because the variety of categories or elements is approached in discourse by way of common topics or ‘commonplaces’; the variety of facts or statements of what is the case by way of common hypotheses; the variety of arts or methods of treating problems by way of common themes; and the variety of assumptions or principles by way of common theses.” [2]

Are both these fourfolds aligned correctly with the previous Knowable, Knowledge, Known, and Knower? McKeon’s use of terms in his rhetoric was very fluid, perhaps to prevent systemization or to promote pluralism. However, his main reference to fourfolds was Aristotle’s four scientific questions, or Four Causes, which we can use to try to understand his fourfolds.

References:

Theresa Enos (ed.) / Encyclopedia of Rhetoric and Composition: Communication from Ancient Times to the Information Age

[1] Richard McKeon / Selected Writings of Richard McKeon: Volume One: Philosophy, Science, and Culture

[2] Richard McKeon / Selected Writings of Richard McKeon, Volume Two: Culture, Education, and the Arts

Click to access McKNotes-Semantics&Inquiry_Intro.pdf

H. L. Ulman / Things, Thoughts, Words, and Actions: the problem of language in late Eighteenth-Century British rhetorical theory

[*5.197, *6.140, *7.162, *7.165]