This article doesn't answer why is it a good practice. > You need to prime it with some kind of personality (ideally that of a useful, friendly assistant) so i

This article doesn't answer why is it a good practice. > You need to prime it with some kind of personality (ideally that of a useful, friendly assistant) so it can pull from the helpful parts of its training data instead of the horrible parts. No, you have to give it enough context so that it can start finding an answer but it certainly doesn't need a personality. Try it yourself, instead of telling it "you are", tell it "your task is". No personality, simply expectations.