The brain performs best when it focuses on one thing at a time. The more you multitask, the more distracted you'll be and therefore the worse you'll be at thinking. Multitasking is reducing both your intellect and performance.
It's not enough that someone knows what his or her job is. They also have to understand where their job fits in as part of the overall goals of the organization. Otherwise performance gaps can develop.
In business meetings, views that are at odds with the consensus tend not to be expressed. In those cases, a type of "groupthink" emerges whereby the critical scrutiny that should be devoted to an issue gets truncated by the pressure to achieve consensus.