He was a senator for one year not really experience. True Trump sounds like a knucklehead at times, but to say he doesn't know the big issues. Economy, immigration, terrorism is silly. He might not know the details like Obama/ Hillary but if you are a CEO you know the problems and get experts to get into the nitty gritty.
I'm sorry, but I don't think you're being entirely accurate.
He sounds like a knucklehead 99% of the time. He couldn't answer a question on foreign policy as well as the average beauty contestant could. I mean, if Ms. Idaho went up on stage and tossed together a word salad for her answer, the same way Trump does when answering questions, it would be a viral video for a month, with people laughing histrionically. That same agonizing tightrope walk of a response that you see on the viral video's is no different than hearing Trump speak on policy. It is absolutely astonishing that he's even a candidate for the presidency. He can only be described as a child in a man's body. A malignantly selfish, ignorant and petty person. He's a tyrant in the making, in so far as our system could accommodate a tyrant. He has no respect for free press, no respect for opposing voices, even to the point that he'd rather attack a gold star family and the quintessential American war hero in John McCain. He's spoken gleefully of opening up libel laws so that he can sue (and I'm sure constantly threaten to sue) any media that dares to go against him. Just as he's done through his entire life. The man shows every sign of being motivated by pure selfishness and narcissism. And why should he be so narcissistic? He is best described as completely rudderless intellectually. And if you listen to the guy, he seems to be bull****ting on a scale that borders on confabulation. It seems as though there's something wrong with his mind.
For comparison, listen to Clinton speak. You hear someone that is well informed, who's trying to be coherent, but is also fairly paranoid about saying something unpopular and making a political mistake. She's being cautious to a fault, until very recently with the stupid "deplorable" remark. But I can live with that. Because we know she can find Pakistan on a map, which Trump could possibly manage to do so, but she also knows a lot about what's going on there and the history of US-Pakistan relations.
When you hear Trump speaking off the cuff, you hear someone that's being prompted by his own misstatements to complete a thought that he clearly didn't intend to. Which is to say that the thing he's now saying doesn't reflect anything he believed or thought about before, but he's saying it now because the last phrase he spoke just launched him there. It's like he's speaking in verse and he's forced again and again to complete the rhyme. Rather than say something competent, intelligent, he has to say something that "rhymes" with that new world view that he just created. Take Putin for example. First Trump will mention that Putin called Trump "bright". Well at that point people start to question why anyone would Putin to like an American president, so rather than admit "yea it's odd" Trump will instead go to the mat defending Putin as a strong leader etc. etc. So at the end you have Trump defend a murderous dictator, not for any grand purpose, not for world peace, not for any strategic advantage for the country, but rather just so Trump can continue to brag about a compliment. It's the equivalent of a lonely woman defending a murderer in jail because the guy wrote her a letter saying how pretty she is. She wants so desperately to cling to that affection, even if it is means next to nothing, that she'll defend him by saying he didn't mean to do it, or he was set up, or he's a changed man.
Trump has no substance. He's just creating an atmosphere. And that atmosphere is made up of false confidence. The people that are voting for Trump just to "shake things up" are playing chicken with the country, and there's no one in the other car.