Why does President Trump tell such stupid, obvious lies? You know the lies I mean. Not the lies of self-service, flattery, or malice. Those lies are frequent and reprehensible, but they at

least have a certain logic: We can understand _why_ Trump would lie to advance a policy aim, to undermine a political enemy or bolster a friend, to enhance his bank account, or to protect

himself from legal trouble. We can grasp the rationale of those lies while opposing their use. But then there are the other lies. The unutterably dumb lies. The pointless, easily disprovable

lies that serve no obvious purpose. Like Trump's long and continuing obsession with crowd sizes, which he consistently falsifies despite photo evidence of the truth. Or his reported

York. Trump has told this lie at least thrice — but _why_? SUBSCRIBE TO THE WEEK Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives. SUBSCRIBE

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morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox. In fact, why tell any of these lies? Why launch, unprompted, into what

appears to be a worse-than-useless falsehood that will inevitably come under public scrutiny and be quickly debunked? "I just thought, why would you lie about that," one donor said

of the "Tim Apple" thing. "It doesn't even matter!" Why, indeed? Here are six possible explanations. 1. PRIDE This is not pride in its more positive sense — pride

in your accomplishments, for example, or in the merits of your city or loved ones — but at its most destructive. In fact, it borders on delusion. In this scenario, Trump describes the world

as he wants it to be, and that crucially means describing _himself_ as he wants to be (and to be seen). He responds to threats to his ego by saying what he wants to be true, regardless of

reality. So if the "first mission of any Trump lie is to make Trump himself look and feel better," and if his egotism is sufficiently monstrous, then no lie is too petty or

pointless to skip. Trump draws the biggest crowds, did not say "Tim Apple," and was sired by a man born in Germany because that is what Trump wants. Affirming each falsehood is a

moment of satisfaction, however fleeting, for his pride. 2. HABIT Trump lies significantly more often than the average American, and the pace of his lying has accelerated. Perhaps he lies

because he lies — that is, he tells the purposeless lies because he tells so many purposeful ones. The habit of lying created by the explainable lies holds even when there is no useful lie

to be told, so Trump fills the gap with a useless lie instead. Related to habit is compulsion, which raises the subject of mental illness. And yes, some mental health professionals have

argued Trump necessitates abandoning their field's longstanding ethics rules against diagnosing public figures from afar. Sociopathy, which is identified by traits including habitual

deception and impulsiveness, is a common proposal for Trump. But as I am not a mental health professional, and I do see the wisdom in banning remote diagnoses, I'll stick with

"habit" as an explanatory option here. 3. CAMOUFLAGE In this explanation, Trump lies incessantly so the little, pointless lies can provide cover for the big, important ones.

"We must actively choose to accept or reject each statement we hear. In certain circumstances, that verification simply fails to take place," explains Maria Konnikova at

_Politico_. One of those circumstances is a deluge of deception. "Our brains are particularly ill-equipped to deal with lies when they come not singly but in a constant stream,"

Konnikova continues: In a bizarre turn, one of Trump's former primary rivals, Rick Santorum, nearly used this explanation to defend the president's untruthfulness in a February

appearance on CNN. Trump "doesn't tell the truth about a lot of things fairly consistently," Santorum said, so the "fact that he's not telling the truth about Russia

fairly consistently, at least in the eyes of people around here, why is that any different?" 4. POWER Perhaps the point of the pointless lie is the lie itself, because lying is a way

Trump exercises power. He lies because he can, because it is a constant opportunity to express and even enforce his will. "If you are governed by a set of rules and laws, and then tell

lies that enable you to break those rules and laws, the lies give you power," argues Lucian K. Truscott IV at _Salon_. "It's like you're standing astride the life of the

nation and saying, 'I know I'm lying. You know I'm lying. I'm powerful, and you're not. F--- you.'" 5. LOYALTY Trump could also lie because his

subordinates and supporters will loyally participate in his deception, and Trump is all about loyalty. One way Trump requires his underlings to lie is lying himself, telling a falsehood they

must then perpetuate. George Mason University economist Tyler Cowen has theorized that this functions as a test of trust: "If you want to ascertain if someone is truly loyal to you,

ask them to do something outrageous or stupid." And beyond demonstrating loyalty, Cowen says, this forced deception actively cultivates it by making subordinates "grow more

dependent on the leader and less likely to mount independent rebellions against the structure of command." The loyalty explanation works with Trump's fans, too. Believing or

pretending to believe — it doesn't really matter, psychologically — Trump's outrageous claims fosters a sense of in-group solidarity. It's a sign of tribalism, sort of like a

secret handshake or codeword. Talking about how Trump had the biggest inauguration crowd of all time shows you're in, and whether you sincerely believe the crowd was record-setting is

irrelevant. Trump himself has come close to offering this explanation, telling ABC News he does not have to give evidence to back his unfounded claims about mass voter fraud because

"many people feel the same way that I do. … [T]hey're saying 'We agree with Mr. Trump. We agree.' They're very smart people." 6. TIME This final option may be

the least conscious and strategic of them all: Maybe Trump tells useless, obvious lies because it never occurs to him not to do so. And maybe it doesn't occur to him because he

struggles to relate constructively to the past and future. He cannot think long-term, so he never considers that his lies will be found out in short order. "Like my 92-year-old mom,

Trump lives in a very small window of time, and no, I don't mean he lives 'in the moment' in that healthy, New-Age-y sort of way. I mean he has trouble looking backwards or

forwards in time," suggests Robert Epstein, senior research psychologist at the American Institute for Behavioral Research and Technology, at _USA Today_. Epstein goes on: The ability

to think beyond the present moment is a mark of adulthood, and this theory goes a long way toward explaining why Trump's pointless lies feel so childish. It's the behavior of a

toddler unable to calculate likely consequences or account for relevant history when a lie slips off his tongue. All that matters is right now, and right now, the lie feels like the way to

go. The troubling difference, of course, is that Trump already grew up.