National Geographic cover story, "Why We Lie ... scheming and dishonesty are part of what makes us human," by Yudhijit Bhattacharjee:

"Our capacity for dishonesty is as fundamental to us as our need to trust others, which ironically makes us terrible at detecting lies. Being deceitful is woven into our very fabric, so much so that it would be truthful to say that to lie is human."

"Researchers speculate that lying as a behavior arose not long after the emergence of language. The ability to manipulate others without using physical force likely conferred an advantage in the competition for resources and mates, akin to the evolution of deceptive strategies in the animal kingdom, such as camouflage."

Why it matters: "[O]ur proclivity for deceiving others, and our vulnerability to being deceived, are especially consequential in the age of social media. Our ability as a society to separate truth from lies is under unprecedented threat."

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Finally, a real debate

Photo: Morry Gash/AP

A more disciplined President Trump held back from the rowdy interruptions at tonight's debate in Nashville, while making some assertions so outlandish that Joe Biden chuckled and even closed his eyes.

  • A Trump campaign adviser told Axios: "He finally listened." 

The result: A real debate.

  • With a firm moderator, NBC News' Kristen Welker — along with threats of mic cutoffs and advisers' pleas for Trump to cool it — voters finally heard clear contrasts.
  • Trump swung several times, but never quite landed a punch as he tried to connect Biden to a nebulous cloud of allegations about business dealings by his son Hunter.

Between the lines: Trump didn't focus on assuring women voters or seniors. But his economic argument could reassure some men in swing states.

  • Trump went back to 2016 mode — the outsider, chiding career politicians. But he's one of them now.

During an exchange about race in America, Trump said: "Nobody has done more for the black community than Donald Trump, with the exception of Abraham Lincoln — possible exception. ... I'm the least racist person in this room."

  • Biden retorted sarcastically, referring to Trump: "Abraham Lincoln here is one of the most racist presidents we’ve had in modern history."

Videos:

Reporting was contributed by Stef Kight, Alexi McCammond, David Nather and Hans Nichols.

Biden to Trump: "I have not taken a penny from any foreign source ever in my life"

Former VP Joe Biden pushed back Thursday against allegations from President Trump, saying he had never profited from foreign sources. "Nothing was unethical," Biden told debate moderator Kristen Welker about his son Hunter's work in Ukraine while he was vice president.

Why it matters: Earlier on Thursday, Hunter Biden's former business partner, Tony Bobulinski, released a statement saying Joe Biden's claims that he never discussed overseas business dealings with his son were "false."

Trump claims COVID "will go away," Biden calls his response disqualifying

President Trump repeated baseless claims at the final presidential debate that the coronavirus "will go away" and that the U.S. is "rounding the turn," while Joe Biden argued that any president that has allowed 220,000 Americans to die on his watch should not be re-elected.

Why it matters: The U.S. is now averaging about 59,000 new coronavirus infections a day, and added another 73,000 cases on Thursday, according to the Covid Tracking Project. The country recorded 1,038 deaths due to the virus Thursday, the highest since late September.