From 2-3 decades. What makes the world is changing is a human from the past to the present, the world we have changed a lot. But apparently the information and communication technology Or change the information. We found that the spread of information in this day and age faster than before, such as in the past, to get to know the information, to take a very long time. Because in the past no technology involved. Communicate and transmit data must take over. But, in the present technology to help the communication and spread information quickly.