How much research does a screenwriter need to do when writing a script. Do we need to know all the medical terms for what is happening in lets say in an ER. Or do we just write what is going on. Doctors work on gun shot victim, trying to stop the bleeding. Or if its a Historical piece do we write what someone would be wearing during that time? Or just say She wears 1940's fashion? I tend to do a lot of research for myself to really know the subject.