To me, that’s the problem in a nutshell. Its so rational, its insane, it is rational to the point where reason becomes impossible. Like Objectivism, in its headlong determination to eliminate anything not strictly rational, it fails to recognize that humans are not adding machines. All philosophical systems depend, at bottom, on at least one fundamental assumption, and assumptions cannot be strictly rational.
For instance, a lot of modern economics depends on analyzing the behavior of the rational actor. Myself, I’m not sure I know any. I know people who behave rationally in pursuit of irrational goals, like the accumulation of loud, shiny crap. I know people who behave rationally in reference to fundamental assumptions, be they economic, religious, political or pathological.
Hyper-rational systems are inhuman, in the basic sense of the word, they attempt to order the behavior of semi-rational beings, that is to say, us. And, of course, Marxism’s elevation of History to the position previously occupied by God is quite, quite insane.
Socialism, like American democracy, is best left undefined, it is an ongoing experiment we bequeath to our children and grandchildren, to be tinkered with, to be amended, to be altered to fit circumstances as they arise. It is the highest form of improvisation. We may dream of unalterable and immutable principles, like an agnostic who craves faith but has only his doubts, and is not comforted by the notion that doubt is as holy as faith, and far easier to sustain.