I’m sure this is not intentional - it may just seem like the right character to use - especially when you’re composing your 10th bullet point - and you’re on a roll - and the content just keeps coming - and you don’t want to stop or you’ll loose your train of thought - so a hyphen is quick and easy.
But…
It doesn’t really serve you or your content well. Dashes visually break the flow of a phrase, and that is often counter to the intention of the writer or presenter. Editing can help. Here are some alternatives to dash overload:
- Use a colon instead. If you have a headline that states a fact followed by some consequence or effect, use a colon (e.g., Energy Inefficiency: Over 57% Energy Wasted in U.S.)
- Use a period. Separate the item from its description in a bullet list with a period, such as this list. Using boldface for just the item also helps with legibility.
- Parenthesis. If an phrase is parenthetical (i.e., supplementary to your main idea), put that phrase in parenthesis. In a headline, consider removing the phrase altogether, such as moving it to the body of the slide.