ahhh, I see (actually I see in the manga what you mean... it was just worded somewhat ambiguously to me, perhaps because they're really not explaining this pseudo-science fate element very well. I guess its like that old Heinlein story about the guy who had a machine that determined the patient's "4 dimensional length" and therefore the exact end of life ... not why/how, just when.
Frankly, I'd still be questioning him a bit harder but I suppose its a bit of cultural fatalism to assume "wiser" people always get it right. At the least, I'd be saying - "hey wait a minute, he snuffed at the crash but we still have Hazumu with us... is there some way to work that angle again?" ... but then the story would move too fast I guess
I am liking the additional depth the manga gives to each character so I'm kind of anxious to see who gets some kind of idea first rather than just accepting fate.