One of the biggest things that I took away from the guest speaker is that there is a big difference between writing a solutions story and practicing good solutions journalism, and focusing on one person in a hero story. All the time, on almost every local and national network we see the story focusing on one person trying to stop a problem, instead of focusing on the problem itself. While these stories are still good, and fun to read and watch, they do not tackles any problems, and the only highlight one person.
Another thing I took away from the guest speaker is the importance of evidence. No matter what, you have to be honest with the reader, and that means letting them know everything you know. If you just write about the positive facts, you are basically doing free PR for whatever you are writing about. This requires doing research, and talking to people in order to let your reader know what is really going on, and everything that you know.