Logical Necessity and Physical Causation Assigning mathematical quantity to logic such that A=A would be 1=1, and A-->B would be A = B, shows that there can be quantities to be expressed as qualities and visa versa. In binary code 0=0 & 1=1.
This mathematically and logically specific quantifying of variables of cause (a) to effect (b), and variables equaling themselves and predicates, is of the world of classical physics and classical logic. .
The classical world breaks down at the quantum level, where a different set of logical and mathematical laws are deducible or express-able.
Indeed what causes this distinction, (quantum vs. classic) is a mystery in physics. However, they're both set within them deducible laws of math & logic.
Individualizing specific causes and effects, is the same as making variables logically necessary. That which is already individualized causation makes logic necessary.
I really don't know if that inspires a further understanding for anyone. I think I am just on the cusp of learning the nature of this (even with Aristotle/Hume/Kant and modern logic), and have yet to dive off into the deep end -- where abysmal complexity abounds. Perhaps, chaos theory or multiple-world theory, and its logical consequences are in those waters.
*I'm fascinated by such fringe inquiries. Great discussion, looking forward to more.
*Grabs life-jacket.