Smartphones are basically computers in our skulls, a radical shift in human existence from not looking at computers for most people to being tied to one for hours a day. You can pretend the world isn't rapidly changing but that's just a bias to living in the present. Of course we haven't invented fantastical physics defying devices yet but the technological difference between now and 1970 is just as start as the one between 1910 and 1960, just in different ways.
