David Foster Wallace once said that:The language of images. . . maybe not threatens, but completely changes actual lived life. When you consider that my grandparents, by the time they got married and kissed, I think they had probably seen maybe a hundred kisses. They'd seen people kiss a hundred times. My parents, who grew up with mainstream Hollywood cinema, had seen thousands of kisses by the time they ever kissed. Before I kissed anyone I had seen tens of thousands of kisses. I know that the first time I kissed much of my thought was, “Am I doing it right? Am I doing it according to how I've seen it?”

A lot of the 80s and 90s critiques of postmodernity did have a point—our experience really is colored by media. Having seen a hundred movies about nuclear apocalypse, the entire time we’ll be looking over our shoulder for the camera, thinking: “Am I doing it right?”

it’s the common rules that govern all creation and consumption across a medium that change people and society. Oral culture teaches us to think one way, written culture another. Television turned everything into entertainment, and social media taught us to think with the crowd.

There is a grammar and logic to the medium, enforced by internal culture and by ratings reports broken down by the quarter-hour. You can do better cable news or worse cable news, but you are always doing cable news.

Don’t just look at the way things are being expressed; look at how the way things are expressed determines what’s actually expressible.” In other words, the medium blocks certain messages.

Television teaches us to expect that anything and everything should be entertaining. But not everything should be entertainment, and the expectation that it will be is a vast social and even ideological change.

Television, he writes, “serves us most ill when it co-opts serious modes of discourse — news, politics, science, education, commerce, religion — and turns them into entertainment packages.

The border between entertainment and everything else was blurring, and entertainers would be the only ones able to fulfill our expectations for politicians. He spends considerable time thinking, for instance, about the people who were viable politicians in a textual era and who would be locked out of politics because they couldn’t command the screen.

As a medium, Twitter nudges its users toward ideas that can survive without context, that can travel legibly in under 280 characters. It encourages a constant awareness of what everyone else is discussing. It makes the measure of conversational success not just how others react and respond but how much response there is. It, too, is a mold, and it has acted with particular force on some of our most powerful industries — media and politics and technology.

I’ve also learned that patterns of attention — what we choose to notice and what we do not — are how we render reality for ourselves, and thus have a direct bearing on what we feel is possible at any given time. These aspects, taken together, suggest to me the revolutionary potential of taking back our attention.