Each type of visual aid has pros and cons that must be evaluated to ensure it will be beneficial to the overall presentation. Before incorporating visual aids into speeches, the speaker should understand that if used incorrectly, the visual will not be an aid, but a distraction.
When we first checked out our new headphones, we noticed the box said “improved bass”. We had to wonder if this was marketing jargon or the real thing? But it only took a moment to realize that bass was not kidding.