Why Data science and Artificial intelligence Now?

Buzzing word right now in current decade is "data science" and there is lot of stuff going on and there is lot of talk too,we have seen tremendous hype about data science and artificial intelligence,all of sudden why this is becoming more popular day by day and many people are taking data science as career,why? Because of this internet high speed there in turn internet usage increased and users too and which lead to many things,we will not discuss about that and you can cross check now that how many people are using Internet every second and you will be stunned,yes that is what the history of internet in last decade i,e rapid growth in internet usage and users. But one major reason is amount of data we gathered till now, that is what makes huge difference in today's AI world As you seen above data gathering and hard ware enhancement makes huge difference why? see when you leave lot of data behind and that means your leaving your hidden pattern behind the whatever the activity you make rite? Think about how much time it take to process data in large amount using few mbs of memory and you can not imagine that rite???? Now you can come to the conclusion that why data science and AI is popular right now!!!!. Now just think about in 1970s or 1990s why it was not taken off heavily although its been around many years .