Belief is a mental representation of what is true. It takes a combination of one's perception and knowledge to come to a conclusion about what is most likely to occur, and thus, what one believes.
Do you believe?
It's hard not to look at the 3-1 deficit the Montreal Canadiens are facing and not feel a twinge of dread. Never in this storied franchise's history has an edition of the Montreal Canadiens come back from a 3-0 series' deficit. Never before has this happened... This knowledge informs a conclusion that the likelihood of the Canadiens coming back in this series is almost close to none.