Donald Trump is too gullible to be president
http://www.vox.com/2016/3/15/11225128/donald-trump-gullible-internet
I cannot believe that I am about to write the following sentence, but here goes: Donald Trump, the frontrunner for the Republican nomination for the presidency, is accusing Ted Cruz's father, Rafael Cruz, of being connected to John F. Kennedy's assassination....
The comment launched much mockery. But it's actually both more damning and more important than it seems. There's plenty of good information on the internet. Trump has a repeated habit of choosing bad information, both on and offline.
His tendency to solicit, repeat, and retweet self-serving falsehoods served up by sycophants and hangers-on should be taken seriously. Among the most important tasks the president has is knowing what to believe, whom to listen to, which facts to trust, and which theories to explore. Trump's terrible judgment in this regard is one of the many reasons he's not qualified for the office.
Trump's record here also undermines the strongest argument for his candidacy: that his showman's persona is just a front, and at heart he's a calm, thoughtful, coolheaded businessman who will surround himself with the best people and govern in a pragmatic, results-oriented fashion.