Rational,
You wrote: “All I said is that CERTAIN (I have to capitalize for you people) ideals they believed were influenced by non Jewish ideals and thinkers . . . Most of Halacha isn’t like this, but here its obvious it is, because of the similarities in thought.”
Now, I am not sure what you are specifically referring to by “here” but as a logical matter, just because things are “similar” doesn’t mean that one influenced the other and even if there was influence, it doesn’t tell you which one did the influencing.
I am not denying that influence is possible. Chazal were human after all. I am maintaining however, that we cannot know where the influence, if any, lies and we certainly can’t know that we, in our assessment of Chazal are not succumbing to the same sort of outside influences. And therefore it is foolish to make any practical changes based on suspicions of influence.
This is not like empirical fact.
(As an aside, I don’t think Chazal believed the world was flat. The Greeks knew the world was round and, according to the Yerushalmi, Alexander the Great proved the world was round. Chazal had extensive contact with Greek science and would have been aware of this.)