After more than a week of defending himself to 9/11 truthers, Donald Trump today clarified why there’s absolutely no evidence to corroborate the rooftop parties he “saw with his own eyes”: The ancient technology of 2001.

Trump was a caller on MSNBC’s Morning Joe this morning when he lit upon the explanation, telling Willie Geist that the “hundreds” of his supporters who also say they saw the parties can’t be wrong.

“They’ll find something. They’re going to find something,” Trump insisted, before explaining that “they” probably won’t find something because of the “ancient” technology used in 2001.

“Don’t forget, 14, 15 years ago, it wasn’t like it is today, where you press a button and you play a video. Fourteen, 15 years ago, they don’t even put it in files, they destroy half of the stuff. You know, if you look back 14, 15 years, that was like ancient times in terms of cinema, and in terms of news and everything else. They don’t have the same stuff. Today you can press a button and you can see exactly what went on, you know, two years ago. But when you go back 14, 15 years, that’s like ancient technology, Joe.”

Donald Trump truly has an explanation for everything.

[There was a video here]