They protect you from signing releases too early

https://pr.taosnews.com/article/Atlanta-Metro-Personal-Injury-Law-Group-Releases-Settlement-Guide-Addressing-1-Million-Car-Accident-Settlement-Documentation-Requirements?storyId=6a2835d73c67a30002f859be

They protect you from signing releases too early, ensuring you do not waive rights before the full value of your injuries is known.