The longer and more convoluted the patient history leading up to the traumatic event, the more trivial the injury, and the shorter the patient's ED stay will be.
Example: If your patient has been stabbed, and when asked, "So dude, show me where you're hurt," replies with a windy narrative that begins five years ago about his ex-girlfriend's cousin Mookie who just got out of jail for beatin' on his babymomma while he was on the the pipe and now he out and causin' all sorta ruckus…
… there is a 95% probability your patient's stab wound can be covered with a Bandaid, and he will be discharged from the Emergency Department before you finish your run report.