Tom Veil said:
lumpthing: my resistance has do to with 2 things. One, I (mistakenly) thought people were saying Judaism is a historically insignificant religion.
I certainly didn't mean to suggest that since I believe quite the opposite. I would say Judaism has had more historical significance than Zoroastrianism, just not in a way that is simulated by civ4's religion model.
Tom Veil said:
So that's my second problem. You point out that you could improve Persia by adding Zoroastrianism. But what of Egypt, Rome, Greece, Aztec, Japan, Mongolia, and Inca? They all, at their peaks, had state religions that are not present in the game, too. I don't see why we should give Persia their state religion and not give all these other nations theirs.
A decent case can be made for all those religions. However, the default number of religion in civ4 so, without substantial modding, we can only replace Judaism with one religion. Which of the myriad of candidates should be picked? I propose Zoroastrianism because...
1) It was a lot more long-lived than the others. The state religions of Egypt, Rome, Greece were very rapidly replaced by Christianity and later Islam. Inca and Aztec religions did not survive the collapse of their states. Mongolia's religion was quickly overshadowed (if not eliminated) when Buddhism arrived. Japan's folk religion was also overshadowed by Buddhism. What we know as Shinto borrowed hugely from Buddhist and Chinese beliefs and can't be easily separated from them. Zoroastrianism survived the multiple collapses of the Persian Empire and still exists today in its homeland and amongst the diaspora. I'm not saying that Zoroastrianism is an inherently stronger religion than the others, just that the historical fact of its longevity and resiliance make it much more suitable as a civ4 religion in this mod.
2) Zoroastrianism is more distinct than the other religions. While the other state religions you mentioned embraced a whole mish-mash of assorted dieties and spirits, Zoroastrianism worshipped one god and had a much more distinctive and unified set of doctrines.
3) Zoroastrianism is historically significant. It is probably the world's oldest monotheistic faith: a possible successor to Hinduism and a precursor to Judaism.
4) Zoroastrianism is more equivalent to the other current civ4 religions than the other state religions you mentioned in that it possesses the typical characteristics of the 'younger' faiths which have ended up dominating the world. Early religions invariably worship a profusion of dieties who extol a diverse range of virtues and ethics and have no focus on a path to salvation. The later religions, the ones which now dominate and are included in civ4, narrow this down to either a single god (Judaism, Christianity and Islam) (with a corresponding single set of ethics) or remove the focus on gods entirely and concentre on a single spiritual 'path' (Taoism, Confucianism, Buddhism). Hinduism appears to be the exception in its worship of many gods, but Hinduism is (arguably) different from most other polytheisms in that it has the concept of a definite spiritual path, which all beings should follow and does have the concept of all the gods being an aspect of one single greater god. All seven civ4 religions clearly espouse a definite path to spiritual salvation. Zoroastrianism fits nearly into this club in that it worships a single god who espouses a path to salvation.
So, in conclusion, it just seems the most natural choice
.