Donald Trump has symptoms consistent with end stage dementia. That’s just the obvious truth. Even after a weekend in which he appeared to claim that 9/11 happened a year ago and that he warned Pete Hegseth about it in advance, the media still doesn’t want to acknowledge what’s happening. But even as the media continues to pretend Trump doesn’t have dementia, Trump himself keeps unwittingly educating the public on the fact that he does have dementia – and he just gave something away.

Yesterday Trump met with reporters for yet another “proof of life” session, but all it did was prove that Trump doesn’t know where he’s at or what’s going on. He spent the session randomly whining about how his teleprompter didn’t work during his United Nations speech. Then Trump made the incredible claim that because his teleprompter wasn’t working, no one in the room could hear what he was saying. No really, he said that.

Trump is now giving away that he’s so far gone, he literally doesn’t know what a teleprompter is anymore. His babysitters presumably told him that the teleprompter failure kept anyone in the room from hearing him, as a way of soothing him after he got such a muted reaction from the room. And Trump believed it. He actually believed the notion that if you’re giving a speech and the words stop appearing on the screen in front of you, but you keep talking, it means no one will be able to hear you.

No mentally or cognitively competent person could possibly entertain a thought like this. Trump knows what a teleprompter is better than anyone. He also knows what a sound system is. Or at least he used to. These days he doesn’t know what anything is – and he can also be convinced of anything.