If you’re asked to speak at a conference or event, it’s likely because you’ve demonstrated expertise in your particular subject. To provide a great experience for attendees, you generally want to focus on the topic the organizers have requested – the “greatest hits” that you’re known for. But you’ll run into trouble if you give the same speech verbatim every time: your material will resonate much better with some audiences than others, and some may have heard your remarks before and get bored with the exact repetition.