1. E-book and products like evernote/google keep. I rarely write things on paper now because I often experience the difficulty of copying/searching. On computer

1. E-book and products like evernote/google keep. I rarely write things on paper now because I often experience the difficulty of copying/searching. On computers copying/searching is a breeze. 2. VoIP, Skype, WhatsApp, etc. Many years ago I thought they can totally replace traditional phone calls, at least for 99% users. But that didn't happen. 3. Technologies for telecommuting. Less congestion, less pollution. And it saves both time and money. But it's still not so popular. (In Asia, it's very rare.)