"looked up Jesuits and found too much information for me to read without being late to uni this morning, so i"
They are a JudeoChristian religious sect that has always had a strong leaning towards science. There are many advances in science and math that are attributed to Jesuit Priests.
As such, they are a prime example of religious people that work in the realm of science AND religion and can modify EACH to fit the other.
http://www.jesuitsinscience.org/and i'm not sure if your stab at young earth theory is also meant to be a point where Christianity can be disproven
That's exactly the point. Since it is scientifically impossible for the Earth to be that young, any argument built upon a young earth, be it religious or scientific, is equally impossible.
On things that can't be proven scientifically, we accept all alternatives but favor none. Otherwise we would be saying that that I can't prove something is right but I do know it is wrong... which is contrary to the scientific method. Hence I can't prove god exist, but neither do I know he doesn't, and thus it remains a individual "possibility" (that any individual can choose to believe it valid or not and be equally correct) but not a scientific "possibility" (such that a singular belief emerges consistently as being more correct than others, in spite of what I personally believe)
On things that can be disproven or proven however, we accept only those things that fit with those fact and dismiss any alternatives. Of course, should one of those alternatives, at a later time, fit the facts better, we have no problem accepting it.
This is also where the Jesuits come in for they have maintained their religion (and quite at peace with it BTW) for hundreds of years in spite of, and often inciting, scientific revolutions.
