Problem of evil as the strongest argument for atheism: suffering and evil as evidence (not logical disproof) against God's existence

Cameron identifies the problem of evil as the atheist argument he has thought most about. He distinguishes two forms: (1) the logical problem of evil — God and evil cannot coexist (considered dead in academic philosophy); and (2) the evidential problem of evil — suffering and evil are evidence that lowers the probability of God's existence. The evidential form is more live. It is emotionally gripping.