Limiting Slides is Not the Answer
When limited by a certain number of slides, most presenters don't rethink their message and pare it down to the core, they simply jam more information on to the slide. What results is an even more cluttered slide that causes more confusion for the audience.
When you start creating persuasive visuals, you will end up with more slides, but the presentation will be much clearer because each slide is only making one key point. This allows your audience to absorb the point before moving on to the next slide.
An experience not too long ago is a good illustration. When I finished a recent three hour session, one of the participants came up and we started chatting about the number of slides. I wanted to find out how many slide she thought I had used. She gave me a number. In reality, I had used five times that number of slides! She was surprised, but agreed that because of the way the slides were designed, it did not feel like it was a ton of information being dumped on her.
When it comes to the number of slides in your presentation, the commonly used business phrase of "less is more" is often not true.