Sentence:  Hence , if what is in question is whether in a given theology myth is or is not completely rejected , it is unimportant whether only a little bit of myth or a considerable quantity is accepted ; for , in either event , the first <WSD>possibility</WSD> is excluded . 
Meaning of the word marked with <WSD> tags:  a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena