Converting the information contained in the product specifications into user documentation. Trying out prototypes of the product. They do not view documentation as an important part of the product. Management prevents them from writing the documentation themselves. Management prevents developers from understanding what other developers on the same product are doing.
Technical writers have more extensive technical training on the product.
You can find potential bugs in the product, report them to the team, and help improve the product. Product information must be searched out, gathered, interpreted, and then written so that ordinary people can understand. Assume that the product developers will bring him the information that he needs to write the documentation. Assume that he must go find the product developers and get them to give him the information he needs to write the documentation. Assume that the information for the product is potentially scattered all over the company, in some cases, not written down, and that he must find it and consolidate it.