I've already explained all this, albeit probably along one of the threads. Because atheism is as old as theism, it's called a belief. This is because, back then, everything misunderstood called upon others to believe. Atheism now simply implies a lack of evidence. Agnosticism, on the other hand, is a refuge for intellectual cowards. The analysis does not account for the lack of evidence correctly or weight it properly against the notion of the obvious fact that humans invented god(s).