I always had trouble with that circle/sphere thing. I know my shapes. A circle is NOT a sphere, and if you look at the horizon, then you get the idea that the earth is a circle. I ignored it because I was trying to believe them (jw's), and it was such a great example to be able to use of advanced learning and authority of the bible. But it never sat right with me.
Zid - I get what you're saying about the difference between living up to the teachings of Christ, and ignoring scientific discovery that might conflict with what you believe. Some of it might be ignorance. But at the same time, some of it is disillusionment with science asserting something that later turns out to be untrue. So from some people's pov, why should they toss aside their cherished beliefs for a theory that experience shows them is subject to change. (on any topic)
You can't completely blame a person for being disillusioned when their doubts are not without merit.
At the same time, passing something in the bible off as fact, and blaming others for not being able to believe it without evidence, is unfair to the non-believer as well.