- Lead off with the facts. You need to state the facts, not the myth. Otherwise, the myth gets reinforced.
- If you have to explain the myth, precede it with a warning. State the myth. Then, provide an alternate explanation.
- Three facts are better than twelve.
- Use simple, clear language. The power of myths is that they are usually simplistic. Your facts need to be able to replace the myth. Shoot for an explanation simple enough that they can repeat it.
- Focus on the undecided; there will always be an unswayable minority especially if it runs contrary to their core beliefs.
- Use graphics.
Here's an example of myth-busting done right: