Absolutely not!
Atheism is the understanding that a) the belief that the existence of god/gods is unnecessary to explain the existence of the universe/origins of humanity etc and other important philosophical questions; AND
b) the belief that the existence of god/gods is far less probable than the alternate hypotheses regarding those philosophical questions; which leads to
c) the conclusion that it is not necessary to worship or in any way engage with god, religion, spirituality etc.
Any atheist with a modicum of intelligence will admit that it is possible that a god exists. Its just that on the available evidence, god doesn't appear necessary. Now, god could have created the universe in such a way, so that there are natural science explanations for everything; perhaps as a test of faith, or even just because he wanted to stay out of the universe. Similarly, the whole world we live in could be an illusion created by an evil demon or the robots of the matrix. These are all scenarios that are totally possible. They are just far less likely than natural science alternatives; to the point of being almost absurdly unlikely. Of course, absurdly unlikely doesn't rule out the possibility; I am absurdly unlikely to win tattslotto, but someone wins every week so it is entirely possible. But with tattslotto, I can make a judgement about my likelihood of winning (incredibly low), and use it to make a decision about how to live my life (not buying a ferrari and a plasma-screen tv, because I almost certainly won't win). Same goes with God. I don't know for certain that no God exists, but I can certainly make the assumption based on probability that he doesn't, and use that judgement to influence how I live my life.
If that appears to contain an element of agnosticism, then that is because it does. But atheism stems from agnosticism; more than being a 'denial' of God's existence, it is a denial that anyone 'knows' about God's existence - the claim to know god is the first made by the religious (or theists), and it is this claim that atheists refute. There is a continuum between atheism and agnosticism, though, dependent on how likely you think god's existence is. You might think it totally likely, almost 100%, but still be a little bit sceptical, in which case the rational response would be to act as if God does exist. That would be proxy-theism. Or, you might think as above, that it is extremely improbable; atheism. True agnosticism, though, is the position that we can't make an assessment based on available evidence, because that evidence is either insufficient, or flawed. An agnostic might say in reference to tattslotto, that we can't make a judgement about whether we will win or not. Interesting, fence-sitting position, to be honest. For tattslotto, we might not be able to make a judgement if we don't know whether we have a ticket or not (the evidence would be insufficient), or we didn't know the odds.
No true atheist would deny the possibility of the existence of god; that would put them into a religious, faith-based position. Back on the tattslotto example, I might say there is 'no chance of me winning' - this would be a faith-based position, not a logical one.
Absolutely fantastic post.





