A lot of the bad news is already reflected in the stock price.Down slightly more than 22% so far in 2024, it's been another disappointing year for Boeing (BA -1.35%). Still, no one is looking at buying Boeing for the company it is now. But there's a robust case for buying the stock based on the potential for its highly regarded new CEO, Kelly Ortberg, to turn the company around. Let's take a look at the bear and bull cases.The bears' caseThere's no shortage of things to worry about with Boeing right now. It ...