people underestimate the impact of a few years.  

but in this modern age, information and new technology spreads fast.

facebook and twitter both opened to the public less than 10 years ago, and now they have billions of users.    

the first iphone launched in 2007, now even 2 year olds have smartphones. And most people can hardly even remember there used to be a live before smartphones, while that very live was not even a decade ago!

Technology spreads fast, it's not 1500 anymore where it takes centuries for new technology to spread.