When presenting, taking into account the overall character of an audience is important. If the audience is young, exploratory and in the business of finding out new facts on issues for the first time, then language appropriate to their level of understanding is important. Similarly, if dealing with an audience well qualified in the area being canvassed, “speaking down” to them would be conciliatory and insulting. Audience specific language is important. That adds to the credibility and the respect held for the presenter. In this context it’s important to know what audience is going to be addressed and to have an understanding of the background prior to delivery is important.