[js1138]

Either way, we must subject every theory to additional or expanded tests, especially attempts to falsify the theory.

Does that apply to religion also?

[RightWhale]

There is so much theological discussion in writing in the past 2000 years that if we had to read it all before dying and going wherever we would live forever, especially if we misplaced our Latin grammars.

[Alamo-Girl]

Doctrines and traditions are not considered "theory" - but indeed, it is the tendency of groups to splinter off - usually based on greater/lesser/different emphasis on specific doctrines or traditions.