I Corinthians 8:4

As concerning therefore the eating of those things that are offered in sacrifice unto idols, we know that an idol is nothing in the world, and that there is none other God but one (KJV)

Then: R. Phua accepts a split definition of "Knowledge" of 8:1-3 from that in Cor 1-4. He states that Paul agrees with nothing in the "knowledge" of 1-4 (p. 129), but accepts the reasoning that for the strong, eating food offiered to idols is an insignificant action. Part of the knowledge about God here - "speculative theory" (p. 128) is true: "There is none other God but one." Wright includes information about the social nature of Corinthian outings. If you were going to "eat out" the only places to go were the temples. That was the practical way to get rid of all that meat. The environoment trivialized the "sacrificial" aspect, so strong believers could, and did, just forget the idolatry implications.

Now: In the recent past the conflict is similar to the "wine" vs "no wine" beliefs of the temperance movement. There is no difference in the starting fact or principle, "There is none other God but one." There are differences in the implications for behavior.

Extra sources: Idolatry and authority: a study of 1 Corinthians 8.1-11.1 in the light of the Jewish Diaspora by Richard Liong-Seng Phua - (Continuum International Publishing Group, 2006) online at http://books.google.com/books?id=QY9GzihNhkwC&printsec=frontcover&source=gbs_navlinks_s#v=onepage&q=&f=false