It’s been a rough week for Donald Trump: the legislation to repeal and replace Obamacare is flopping like a fish out of water, forcing continued amendments in the hopes of winning over Freedom Caucus conservatives and more moderate Republicans, while Trump’s proposed budget is similarly flailing. And to top it all off, Trump had to endure F.B.I. director James Comey fact-checking one of his tweets in real time. On the bright side, though, it appears Trump also learned something new this week: that Abraham Lincoln was actually a Republican.

“Trump is apparently desperate for any good news these days. So on Tuesday, during a speech to the National Republican Congressional Committee, Trump suggested that the party advertise its connection to one especially beloved president: Abraham Lincoln,” Seth Meyers explained on Wednesday’s installment of Late Night.

As Trump described Lincoln’s decision to build the transcontinental railroad, he offered this praise: “Great president. Most people don’t even know that he’s a Republican, right? Does anyone know? A lot of people don’t know that.”

The thing is, a lot of people do know that. As Meyers pointed out, “This can only mean one thing: Trump just found out Lincoln was a Republican.”

For those who doubt that the president could be this in the dark, never forget what happened earlier this year, when Trump seemingly exposed himself as someone who had no idea who Frederick Douglass was—calling the late abolitionist leader “somebody who has done an amazing job and is being recognized more and more, I notice.” As Meyers responded back then, “From his comments, it seemed pretty clear that not only did Donald Trump not know who Douglass was; he also seemed to think that Douglass, who died in 1895, might still be alive . . . ‘Keep your eye on that Fred Douglass kid; he’s going places. Fred Douglass is an up-and-comer.’ “

Embarrassing as that gaffe was, Meyers pointed out that there’s something especially galling about this apparent knowledge gap. ”Dude! Republicans literally call it ‘The Party of Lincoln,’“ Meyers pointed out. “Did you think they were talking about the car?”

Still, there is evidence that Trump has known about Lincoln's party affiliation for a while—at least since August 2016, given his past efforts to educate us all about it, as detailed recently in The Washington Post. As writer Dana Milbank put it, "Trump’s discoveries of seemingly obvious things raise two possibilities: (1) He thinks people are awfully stupid, or (2) he is discovering for himself things the rest of us already knew. Which is true? Nobody knows."