Unfortunately, I can't seriously comment, as you seem uninterested in responding to the Wikipedia link I offered, or otherwise informing me how you stand more concretely. I don't even know where to search to find a backgrounder, so I can proceed without guesswork. You seem to imply that Parecon's explanations are simply illogical, which is your right, but that leaves us with little common ground to proceed on.
As for externalities, I don't know your reasoning why they aren't intrinsic to market economies. (Stakeholders who didn't consent to a transaction nevertheless shoulder costs/benefits from it, which aren't accounted for in each transaction.)
Nor do I understand what "free production" means, a very broad-sounding term which hides much complexity.
Personally, I have no problem with you pointing me to sources I can look at. Sounds more efficient than me figuring out or guessing what you mean, over long posts.
Tayssir