/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: jawaharkhetan https://cdn.slidesharecdn.com/profile-photo-jawaharkhetan-48x48.jpg?cb=1523670401 To the optimist, the glass is half-full. To the pessimist, the glass is half-empty. To the engineer, the glass is twice as big as it needs to be.