Objectivism holds that there are "universally absolute truths", just like in the Abrahamic religions. Objectivism defines their truth from a starting postulated axiom for the epistemology - which the rest of the theories are built upon.
It is easily characterized by the aggressive stance towards society, where they tend to want to shape everyone and everything into their world image. The books of Ayn Rand, and her persona is one of blatant worship, while she had very poor results in her intimate interpersonal relationships.
The apparent appeal of Objectivism is the adolescent breaking out of his normal subjugated family life and approaching adulthood with "strong logics" and intent to organize their world view according to "their truth" and independence as young adults.
When one gets older - one understands that there are more than two sides or bivalence in the universe, and that the world is not organized after abstract logics or mathematics - but that these models are glimpses of situational knowledge which we structure into knowledge. These systems can be invalidated of course - as the universe and any entity part of such systems evolves, disappears or other phenomenons start influencing the situation or system "that we thought we knew".
One good example from physics - the gas models.
http://en.wikipedia.org/wiki/Atmospheric_reentry#Shock_layer_gas_physics
Also - Kurt Gödel presented the possibly most significant characteristic of abstract concepts and systems with his Incompleteness theorem.
http://en.wikipedia.org/wiki/Foundations_of_mathematics
http://en.wikipedia.org/wiki/Metamathematics
http://en.wikipedia.org/wiki/Theory_of_everything
http://en.wikipedia.org/wiki/Metaphilosophy
http://en.wikipedia.org/wiki/Certainty
http://en.wikipedia.org/wiki/Theory_of_justification
http://en.wikipedia.org/wiki/Degree_of_truth
Bivalence is just the set of two approximations of opposite extremes on a scale - interpolated between the two situational/systemic positions.
http://en.wikipedia.org/wiki/Bivalence
One can formalize this, by having a restricted and limited system - but which never can "control" or "contain" reality.
That is why one need to consider open and complex adaptive systems, and keep a sense of "critical rationality" (Karl Popper) while letting go of the limiting restraints of reductionism. But of course it helps to keep things simple while trying to fit it in one's brain...
The simpler - the easier sometimes - confer the religious texts and books of Ayn Rand.
However - as for markets - nothing beats laissez-faire, as long as those corrupting regulators are kept away and that includes having transparent information - not the dishonest actors forcing investors into their rigged trading schemes, backed by corrupt and biased legislations.