Do We Need Examination? Why?

hi....today i want to discuss about " do we need examination?". For me examination is important to me because with examination we can improve our lesson that we learn. It is also test my mind about subject that we learn and can use anytime,anywhere and so on. Examination also prepare me to answer any question that lecturer ask me. I think examination it is good for me and others to look how far we learn about subject and practic again with examination has given by lecturer. I agree if lecturer do the examination. So I hope you all agree with my suggestion. thank you...