GravityWave basically said what I would have in response, but to expand a bit more, consider the work of a physician. If you've never worked in a healthcare setting, it's probably difficult to really understand what these fields "add" to a healthcare setting. The basic idea is that diverse points of view add to the chance of finding a good solution. Part of why we have nurses, doctors, techs, RTs, etc. in so many critical situations in a hospital environment is because each adds something. In a psychiatric or behavioral emergency (e.g., a behavioral code), many hospitals will bring in a team consisting of something along the lines of an ED Physician, Psychiatrist (or Psych NP), LCSW (or Psych Evaluator), Psych Tech/ED Tech, a Psych RN/ED RN, the pt's primary RN and the pt's primary mental health tech or CNA or some similar group of professionals. Each person adds a perspective. The docs obviously offer something the RNs and techs don't, likewise, a tech may offer something the doc can't (often this is experience working with these types of pts in direct care and/or having worked w/ this particular pt in the past). Using multiple people's perspectives and experiences can be very effective when it comes to providing optimal care.