In the future, we'll subject our children and their children to the endless scroll of our Instagram feed, but in the past there were slideshows. Below, let's meet in the middle and look through one person's digital version of the latter, which shows a trip to New York City in 1969, the current year in Mad Men. And as Don Draper once said, Nostalgia is "delicate... but potent. It's a twinge in your heart, far more powerful than memory alone. This device isn't a spaceship. It's a time machine. It goes backwards, forwards. It takes us to a place where we ache to go again. It's not called the Wheel. It's called YouTube."