Essan: I have not looked up believe in the dictionary... I think some of the confusion is that the word sononymous with believe in my language does not signify a "siding" with a belief, merely that one think its most likely.
I will maintain that many scientists use believe to signify high probability though. That may be a wrong usage of the word, but it is common. This is how David MacKay define probability in his book "Information theory":
"Probabilities can also be used, more generally, to describe degrees of belief in propositions that do not involve random variables { for example `the probability that Mr. S. was the murderer of Mrs. S., given the evidence'"
later
Nevertheless, degrees of belief can be mapped onto probabilities if they satisfy
simple consistency rules known as the Cox axioms (Cox, 1946) (gure 2.4).
Thus probabilities can be used to describe assumptions, and to describe inferences
given those assumptions. The rules of probability ensure that if two
people make the same assumptions and receive the same data then they will
draw identical conclusions. This more general use of probability to quantify
beliefs is known as the Bayesian viewpoint. It is also known as the subjective
interpretation of probability, since the probabilities depend on assumptions.
So in MacKayes book belief come in degrees -- as do it in Jaynes, but i am to lazy to take it down from the shelf and quote it. This is commonly refered to our "belief" or prior beliefs. Notice the wording of "more general" refer to the frequentist interpretation of probability theory which is more limited in the sence it only talk about random variables (a very ill-defined concept which map poorly to reality). You can find his book online for free if you want to check it out.
Does that proove anything? i dont really know.