Exactly. Furthermore, to "believe" is not the same as to "know". If someone were to say "I believe I have the answer to this puzzle", he or she is not necessari

Exactly. Furthermore, to "believe" is not the same as to "know". If someone were to say "I believe I have the answer to this puzzle", he or she is not necessarily saying "I know with certainty that I have the answer". It is to my understanding that in common tongue, "belief" is merely the state of having a seemingly coherent mental picture of a scenario, similar to "I see it likely or highly probable". "Belief" need not imply a rigorously tested truth. Nevertheless, I do believe in the hypothesis that the words "believe" and "know" mean different things to different people.