The president was reviewing a book on Saturday. 'Regime Change,' by Maggie Haberman and Jonathan Swan, reports that his health is 'like a black box' and raises questions about his repeated visits to Walter Reed [5]. His response, posted at 12:23 PM: 'I just finished a perfect physical at Walter Reed, I do it every six months, and I requested another Cognitive Test, the only President to do so, three times, and I aced them all - Got every question right' [1].

Set that beside his own post from May 31: 'In fact, this is my fourth such test, all PERFECT or, 120 correct answers out of 120 questions asked!' He added then that 'It is very rare that anyone gets a Perfect Score, especially when achieved four times in a row' [2].

Four in a row in May. Three total in July. The two posts cannot both be right - and if Saturday's 'another Cognitive Test' describes a fresh one, his own May count would make it the fifth. The contradiction requires no outside fact-checker; it is available to anyone who reads his feed in order.

The test both posts describe is the Montreal Cognitive Assessment, administered at Walter Reed on May 26 and scored 30 out of 30 according to the memo from Capt. Sean P. Barbabella, the White House physician [3]. The MoCA is a roughly 10-minute screening tool for mild cognitive impairment and early dementia. A score of 26 or above is normal. Its own documentation states it is not designed to measure intelligence, IQ, or academic ability [3]. A healthy adult acing it is the expected outcome, not a distinction - which bears on Saturday's follow-up boast that 'Few people in Washington, D.C., could do so, including Maggot [Haberman] and her flunky associate, Jonathan Swan. I would be willing to bet they couldn't get 50% of the questions right' [1]. That is a wager about a dementia screen. The scoring memo, for what it is worth, records the test out of 30 points; the May post's '120 correct answers out of 120 questions' is its author's own arithmetic [2][3].

What the posts substitute for is the record that has not arrived. The May 26 exam ran three and a half hours, the fourth publicly announced physical of the term, and the White House said afterward it was 'still working on' a detailed readout [4]. Seven weeks on, none has been released. Saturday's 'just finished' physical came with no date, no memo, and no confirmation of a new Walter Reed visit; wire coverage noted he did not specify when the exam occurred [5]. The same post, in one more small collision with itself, says Haberman covered him 'incorrectly for ten years' and, a few lines later, 'like she's done for eleven years' [1].

The black box the book describes is not a metaphor invented by its authors. It is the visible condition of the record: a promised readout that never came, a test count that changes between posts, and a screening tool for dementia offered, twice, as proof of brilliance [1][2][4].