Passengers are people who don't mind simply being carried along by the company's momentum, offering little or no input, seemingly not caring much about the direction chosen by management. They are often pleasant, get along with everyone, attend meetings promptly, and generally do not stand out as troublemakers. They are often accepted into the fabric of the organization and stay there for many years. The problem is that while passengers can often diagnose and articulate a problem quite well, they have no investment in solving it. They don't do the heavy lifting. They avoid taking strong positions at the risk of being wrong about something. They can take any side of an issue, depending on how the prevailing winds are blowing. In large organizations especially, there are many places to hide without really being noticed.
Amp It Up by Frank Slootman