Hello, I was wandering the internet a few months back and I came across someone who said, in a nutshell, "Write short stories before and after your book (or series) to do with your characters or world so you get to know them or it better, and so you won't make the characters do anything irrational or unlike them in the future." All I wanted to know is whether anyone else does this, and if so, how successful was it for you? Because these stories would likely not be published, is it worth using the ideas about your world in short stories, therefore it being harder to write later books (although I do understand an author should never run out of ideas)? Any tips/advice/general thoughts would be very helpful. Thanks.