Sublime
An inspiration engine for ideas

First, it will prevent a presentation from getting derailed by questions about the chart itself because some element is missing.
Scott Berinato • Good Charts
first see the visual (how you present it to them) and to help them process it (how you get them to engage with it). PRESENTATION TIPS • Show the chart and stop talking. A good chart will speak for itself. Let the viewers’ active visual systems work without distractions. • Don’t read the picture. Talk about the ideas in the chart, not its structure.
... See moreScott Berinato • Good Charts
It is also a common mistake for the slide to contain a set of section “bullets” listing the main points. Generally these belong in the speaker’s notes, not on the screen. They also have the effect of weakening narrative tension because the viewer will look ahead and reason about the conclusion bullet long before the speaker gets there.
Colin Ware • Visual Thinking: for Design (Morgan Kaufmann Series in Interactive Technologies)
Too-subtle visual cues are actually a very common problem. Designers love subtle cues, because subtlety is one of the traits of sophisticated design. But Web users are generally in such a hurry that they routinely miss subtle cues.
Steve Krug • Don't Make Me Think, Revisited: A Common Sense Approach to Web Usability (Voices That Matter)
Many of the best TED speakers don’t use slides at all, and many talks don’t require them. If you have photographs or illustrations that make the topic come alive, then yes, show them. If not, consider doing without, at least for some parts of the presentation.
Harvard Business Review • Frame Your Story
according to the former AT&T presentation research manager, Ken Haemer, “designing a presentation without an audience in mind is like writing a love letter and addressing it ‘to whom it may concern.’”