Any given presentation might, unfairly, make or break a career. People inside organizations expect presenters to know their subject and expect to see value in the presentations. Most employees understand and appreciate the connection between good presentations and career advancement . Few would disagree with the fairness of career damage caused by obviously poor preparation. Fewer still would take issue with diminishing the speaker's stature because of a disorganized impromptu presentation.
Speakers know they have to prepare and execute well.
Listeners know what is reasonable to expect from their co-workers. Safety beyond the danger point of a little knowledge comes with realizing that presenters can deliver well-constructed, accurate, and useful information but still get a negative reaction. Even listeners who refuse to admit it usually know it when they blame the speaker for saying things they just do not want to hear. Speakers must deal with the hidden, and far greater, danger of saying the right thing in the wrong way. Corporate culture sometimes determines the right or wrong way to make a presentation.