To some, Facebook is both a self-published tabloid and a public relations gem. To others, Facebook is a communication tool for families and friends around the world to stay in touch. From a macroscopic point of view, Facebook offers insights into public sentiments and national trends. In a microscopic view, Facebook allows people to reach out and connect on a very personal level.

I think with all technology, people have an idea of how it will be used, but then it has a life of its own and people use it in all kinds of ways. In the same way with Facebook. I doubt when people first created Facebook they imagined it was going to help people in Egypt overthrow a dictator. So it does have a life of its own that we can’t predict.

Right now, there are more people on Facebook than there were on the planet 200 years ago. Humanity’s greatest desire is to belong and connect, and now, we see each other. We hear each other. We share what we love. And this connection is changing the way the world works.

One of the most underrated and underappreciated proven patterns is the news feed. Facebook’s powerful network effects allow the site to attract its users, but its innovation of the news feed has made it a world-class business.

With over a billion active users, Facebook is in a unique position to influence the world by enabling Facebook users to create grassroots movements for peace.

When Facebook is sort of grinding down your privacy, you don't see it. And although you will feel it, you won't feel it for years.... these companies have quietly created perfect records of everything you've done, everywhere you've gone, everything you've clicked, everything you've liked, how long you've stayed on a page, you know, when you had to scroll up to reread a section. All of that is captured, and they use this to model ways to influence your behavior to actually shape and manipulate the decisions you make as a human being.

That monopoly of a persistent identity is the real engine of Facebook’s remarkable success.

If you want to build a service which is not just serving rich people, then you need to have something that people can afford. ... At Facebook, we are squarely in the camp of the companies that work hard to charge you less ... I think it's important that we don't all get Stockholm syndrome and let the companies that work hard to charge you more convince you that they actually care more about you.

"In the old pre-technology days, it would have been almost impossible to replicate Facebook or Twitter. The closest you could get would be to mail dozens of postcards a day to everybody you know, each with a brief message about yourself like: "Finally got that haircut I've been putting off." Or: "Just had a caramel frappuccino. Yum!" The people receiving these postcards would have naturally assumed you were a moron with a narcissism disorder. But today, thanks to Facebook and Twitter, you are seen as a person engaging in 'social networking'."

Despite its revolutionary promises, Facebook can turn our everyday lives into that wedding we have all heard about: the one where the bride chooses her prettiest friends, not her best friends, to be bridesmaids. It can feel like a popularity contest where being Liked is what matters, being the best is the only respectable option, how our partners look is more important than how they act, the race to get married is on, and we have to be clever all the time. It can be just another place, not to be, but to seem.

After all, we're a brain embedded in this larger set of structures. You can call it culture, call it society, call it your family, call it your friend, call it whatever it is. It's the stuff that makes people sign onto their Facebook a thousand times a day. It's the reason Twitter exists. We have got all these systems now that really make us fully aware of just how important social interactions are to what it is to be human. The question is, how can we study that? Because that, in essence, is a huge part of what's actually driving these enzymatic pathways in your brain. What's triggering these synaptic transmissions and these squirts of neurotransmitter back and forth is thoughts of other people, what other people say to us, interacting with the world at large.

As Harris argues, these companies didn’t invest the massive resources necessary to perfect this auto-tagging feature because it was somehow crucial to their social network’s usefulness. They instead made this investment so they could significantly increase the amount of addictive nuggets of social approval that their apps could deliver to their users.

The problem I had when I wrote The Social Network was that this thing that’s supposed to bring us closer together is pushing us further apart. It gives everyone the impression that everyone else in the world is having a better time, and that if you are not cataloging your life, then you’re not really living it. People are going to show you only pictures of themselves having a great time at the best party with the coolest people eating, for some reason, avocado toast. They’re also not going to experience empathy. When we’re a little kid on a playground and say something mean to another little kid, we see in their face what we did, and we feel bad because of it. On social media, it’s more like yelling at another driver from your car. People are developing a chemical addiction to their phones. A gambling addict feels that rush of dopamine and serotonin not when they win but when the roulette wheel is spinning. When kids stick their hand in their pocket to get their phone and see if someone has commented on the photo they posted, they get that rush of serotonin and dopamine. It’s a big deal. And now, when we talk about our concerns with Facebook, we’re talking about the power that it has to disseminate misinformation and disinformation. We’re never going to put this genie back in the bottle, but surely we can decide that lies are bad.

What’s on your news feed is feeding your mind.