What are some innovative ideas presented in "The Surprising Science of Meetings" about making meetings more effective?

The book "The Surprising Science of Meetings" presents several innovative ideas to make meetings more effective. One idea is to split your agenda into two smaller meetings with different attendees, allowing people to attend only the parts that are relevant to them. Another suggestion is to seek ideas and inputs from non-attendees and discuss them in the meeting. This can be done by sending a simple email asking for feedback before the meeting and a subsequent email sharing key takeaways. Sharing detailed meeting notes with other stakeholders can also help to seek inputs and expertise. Finally, the book suggests asking some attendees to represent stakeholders who are not present. These representatives can keep the absent stakeholders in the loop on discussions and ask for future inputs.