/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: isteck https://public.slidesharecdn.com/v2/images/profile-picture.png ���An optimist will tell you the glass is half-full; the pessimist, half-empty; the realist, simply a glass of water; and the engineer will tell you the glass is twice the volume it needs to be.��� Hail to Pitt!!