I was talking to a history professor the other day while I was sitting on the bus. He seemed to be busily scribbling on his notepad. I asked him what he was working on, and he said it was his next book. The book is about the greatest inventions of the last five hundred years. I thought that sounded interesting, so I asked him what they were. He said by far, the greatest invention is the mobile phone. He said with the ability to communicate with friends and family in such mobile and high tech yet simple gadget is something that would absolutely shock our forebears. And I have to agree. I don’t know where I’d be without my mobile phone. It has helped me so much I don’t think I could ever survive without it.