Dear Michael F. Dmitriyev,
The relative and the absolute can be also complementary concepts.
for example:
In an
excluded-middle reasoning two opposites are
simultaneously contradicting each other, and the result is
no middle.
In an
included-middle reasoning two opposites are
simultaneously preventing/defining each other, and the result is
a middle.
The best known example is the duality of a photon, which has both a wave and a particle properties that preventing (the measurement of its accurate place prevents the accurate information about its momentum, and vise versa) and defining (one property cannot exist without the other) each other.
For example, please see this picture:
http://www.geocities.com/complementarytheory/comp.jpg
As you see the two black profiles and the white vase are clearly
preventing/defining each other.
Maybe my paper
http://www.geocities.com/complementarytheory/No-Naive-Math.pdf is somehow related to the subject of your thread.
I'll be glad to know your opinion, thank you.
Lama