I believe there are important social aspects of why/how the large public is presented with certainty about what Science says and has discovered while behind the scene things are not that pretty. It seems that we too often forget that all of our beliefs are based on assumptions, some tested some not, some testable and some not. This means that our efforts are always asymptotically growing towards having true knowledge, as in a true justified belief. This should force some sense of humility in us, specially when dealing to others' beliefs. Religious or not.