Half full? 17 December 2013 reageer als eerste The question has been asked so often: is the glass half full or is it half empty? In this Ted Talk I’ll give you the final answer. Enjoy it. http://www.youtube.com/watch?v=oPBC15XYl3Q Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.