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Mark Zuckerberg (L) and Sean Parker (R). Photos: Steven Senne/AP, Axios video

Sean Parker, the founding president of Facebook, gave me a candid insider's look at how social networks purposely hook and potentially hurt our brains.

Be smart: Parker's I-was-there account provides priceless perspective in the rising debate about the power and effects of the social networks, which now have scale and reach unknown in human history. He's worried enough that he's sounding the alarm. Parker, 38, now founder and chair of the Parker Institute for Cancer Immunotherapy, spoke yesterday at an Axios event at the National Constitution Center in Philadelphia, about accelerating cancer innovation. In the green room, Parker mentioned that he has become "something of a conscientious objector" on social media. By the time he left the stage, he jokingly said Mark Zuckerberg will probably block his account after reading this:

"When Facebook was getting going, I had these people who would come up to me and they would say, 'I'm not on social media.' And I would say, 'OK. You know, you will be.' And then they would say, 'No, no, no. I value my real-life interactions. I value the moment. I value presence. I value intimacy.' And I would say, ... 'We'll get you eventually.'""I don't know if I really understood the consequences of what I was saying, because [of] the unintended consequences of a network when it grows to a billion or 2 billion people and ... it literally changes your relationship with society, with each other ... It probably interferes with productivity in weird ways. God only knows what it's doing to our children's brains." "The thought process that went into building these applications, Facebook being the first of them, ... was all about: 'How do we consume as much of your time and conscious attention as possible?'" "And that means that we need to sort of give you a little dopamine hit every once in a while, because someone liked or commented on a photo or a post or whatever. And that's going to get you to contribute more content, and that's going to get you ... more likes and comments." "It's a social-validation feedback loop ... exactly the kind of thing that a hacker like myself would come up with, because you're exploiting a vulnerability in human psychology.""The inventors, creators — it's me, it's Mark [Zuckerberg], it's Kevin Systrom on Instagram, it's all of these people — understood this consciously. And we did it anyway." P.S. Parker, on life science allowing us to "live much longer, more productive lives": "Because I'm a billionaire, I'm going to have access to better health care so ... I'm going to be like 160 and I'm going to be part of this, like, class of immortal overlords. [Laughter] Because, you know the [Warren Buffett] expression about compound interest. ... [G]ive us billionaires an extra hundred years and you'll know what ... wealth disparity looks like."Go deeper: See the video of Parker's comments.

Go deeper: Joe Biden rips Trump's "phony nationalism".

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Go deeper

Former D.C. Guard alleges Army Generals lied about Jan. 6 response

Members of the National Guard and Capitol police keep a small group of pro-Trump demonstrators away from the Capitol following the insurrection on Jan. 6. Photo: Spencer Platt/Getty Images

A former D.C. National Guard official has alleged that top Army generals "lied" to Congress in their testimony on the U.S. Capitol riot, Politico first reported Monday.

The big picture: Col. Earl Matthews, who was serving on Jan. 6, alleges in a memo that the official version on the military response is "worthy of the best Stalinist or North Korea propagandist" and that the Pentagon inspector general's November report on it features "myriad inaccuracies, false or misleading statements, or examples of faulty analysis."

Toyota to build $1.3 billion U.S. battery plant in North Carolina

The all-electric Toyota bZ4X, the company's first battery-electric vehicle, at the Los Angeles Auto Show in Los Angeles, California on Nov. 17. Photo: Frederic J. Brown/AFP via Getty Images

Toyota announced Monday it's investing $1.3 billion to construct an electric vehicle battery "megasite" near Greensboro, North Carolina, set to open in 2025.

Why it matters: Toyota's Prius hybrid won environmental plaudits when it launched in 1997, but it has since lost ground to electric vehicle world leader Tesla, per Axios' Joann Muller. This battery plant will be the first to produce automotive batteries for Toyota in North America.

6 hours ago - Politics & Policy

Congress hunts for shortcut to pass defense funding, debt limit combo

Senate Majority Leader Chuck Schumer returned to his office Monday. Photo: Anna Moneymaker/Getty Images

The scramble in Congress to pass the National Defense Authorization Act is being complicated by an effort to tie it to a needed hike in the federal debt limit.

Why it matters: The House and Senate are rapidly coming up against a series of deadlines they must address before the end of the year — or risk disrupting crucial military funding and upending the economy. Congressional leaders are now hoping they can knock out both "must-pass" priorities in one, complex swoop.