際際滷shows by User: alaah007 / http://www.slideshare.net/images/logo.gif 際際滷shows by User: alaah007 / 際際滷Share feed for 際際滷shows by User: alaah007 https://public.slidesharecdn.com/v2/images/profile-picture.png If you have an apple and I have an apple and we exchange these apples then you and I will still each have one apple. But if you have an idea and I have an idea and we exchange these ideas, then each of us will have two ideas.