Three main megatrends of the informational revolution were discussed in Chap.  2. Since more specific aspects of this revolution are discussed in the followings sections, here I would like to concentrate on caesurae and important events. Later, the chapter discusses personal computers, computer networks, mobile telephony, Internet and network services, artificial intelligence and cognitivism, human centred computing and knoledge engineering, intellectual property rights and the tendency to privatize intellectual heritage of humanity, binary logics versus logical pluralism.