How to enhance oratory without distracting?
help enhance the experience of an audience during a speech in a manner that is not too conspicuous and does not detract from the speaker and his or her speech (Gunn 2017, loc. 330)
I distinguish between speaker aids (an outline or notes for the speaker), and complementary media (a visual or audio complement for the audience). A deck can serve one or both.
A deck can:
Varieties: props, pictures, data, statistics, multimedia
Use licensed or public domain images, especially in professional contexts.
ic: Openverse
(Creative Commons)iw: Wikimedia
Commonsif: flickrip: Pixabayiu: Unsplash



Keep it short; keep it simple.
A deck should:
including:
100+ slides of a single word, phrase, image
Tufte uses Gerstnerās āletās just talkā at IBM, a critique of the Challenger disaster briefing, and Peter Norvigās PP version of the Gettysburg Address to claim decks ādilute thoughtā
Slideware helps speakers to outline their talks, to retrieve and show diverse visual materials, and to communicate slides in talks, printed reports, and internet.
And also to replace serious analysis with chartjunk, over-produced layouts, cheerleader logotypes and branding, and corny clip art. That is, PowerPointPhluff. (Tufte 2003, p.Ā 3)