Disclaimer: I am not an atheist.
I assume it is a lot like the position that theistic gnostics take: a “belief” is something that one holds to be true without knowing; because it is not a conclusion drawn from questioning but is instead an answer embraced in order to not have to ask the question, a belief is generally a blockade against further questioning.
To be “agnostic” as the term is generally used is to say “I do not know”. A gnostic would be a person who begins with “I do not know” and then seeks to know, by questioning. And the answers received, the conclusions reached, would not preclude continuing to question, a process which could reverse (or otherwise change) the conclusions reached.
To have a “belief”, in the sense of claiming certainty, in the sense of precluding any (or any further) questioning, is to enshrine some conclusions and wall them off from the process of inquiry. It’s a box from which no line leads anywhere else; beliefs are by their very nature not amenable to being reversed or modified by additional information, experience, etc.
I would assume most atheists, especially on this board, place a high value on the scientific method and the spirit of rational inquiry that is embodied there. The scientific method is a gnostic method; science does not have “beliefs”; it contains no conclusion that is enshrined against further inquiry. One can have explanatory theories and working hypotheses but one does not have “proven facts”. Even spectacularly well-established conclusions that are informally regarded as axiomatic are, in the formal arena of science, supposed to be open to reconsideration and reinvestigation.
Note that that is not to say that plenty of individual people who profess to being scientists, or atheists or both, do not enshrine certain conclusions into “beliefs”; they do. In the course of Stoid’s recent thread about whether it is proper to assert as fact that there is no afterlife, this was in evidence. (I am tempted to chalk up much of that to a certain exasperated “oh please not this again!” reaction rather than a formal assertion that, yes, there are Truths in science that should be enshrined and never opened to question).
I would regard an atheist who says “There is no such thing as God; I act on the assumption, well-supported by all evidence, that all belief in God stems from things other than the existence of God, and reciprocally I conclude that there is no God, having seen no evidence or reason to believe otherwise” to be a person who has reached an operant conclusion, not as a person who harbors a belief about the nonexistence of God. Such a person is right when they say it’s not a belief.
Or I would unless that person displayed a fundamental unwillingness to suspend in the formal spirit of inquiry their conclusion and consider the matter anew, while maintaining the claim that they are debating or discussing the issue instead of refusing to do so. THAT kind of behavior actually IS belief-type behavior. It’s got the same walled-off conviction of certainty.
(In the spirit of “oh please not this again”, I don’t think an atheist who declines to debate can fairly be dubbed a “believer in atheism” even if it’s not in evidence that they are not)
