Situational and environmental context
The environmental and situational contexts in which you give a speech, like in so many situations in life, is key.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"All sizes | Senate Antitrust Subcommittee | Flickr - Photo Sharing!."
http://www.flickr.com/photos/jbtaylor/5710805223/sizes/l/
Flickr
CC BY.