Without a big, world-changing vision to distract from his sophomoric product ideas and erratic management, Elon Musk's Twitter takeover is doomed.

Bill Pugliano/Getty Images; Twitter; Rachel Mendelson/Insider

At Tesla and SpaceX, Elon Musk was a jerk with a grand vision. At Twitter, he's just a jerk.

Elon Musk has a pretty tried-and-true playbook for doing business — he's used it for years to build companies from Tesla to SpaceX. Unfortunately for him, it is not a model that can turn Twitter...

Continue Reading At Tesla and SpaceX, Elon Musk was a jerk with a grand vision. At Twitter, he's just a jerk.