Your comment is spot on. I worked in a nursing home for years and the truth is that CNAs did all of the hard labor. Nurses were only summoned when there was a large enough problem (basically if someone needed a treatment, started to code, or was found dead). Most of the time, the nurses just sat at the desk, interfaced with patient visitors (not without complaint - they hate dealing with guests), and passed meds twice a night. Listening to them all bitch about how they do more, or know more than doctors all the time while they sat on their collective asses most of the day was sickening. Also, I am not surprised that most nurses can't follow basic biology that they do not cover at work. Most nurses will tell you that they learn more while on the job than in college, and will readily admit that what they are taught to do in college, and what actually happens in the field are two very different things. Anecdotally, I am not certain if you've ever looked at the nursing school entrance exam, but no joke, there are more botany and earth space science questions than there are questions concerning the human anatomy. I am not certain how much worse it gets beyond the entrance exam though, as I decided not to pursue the field (I realized that I care more about myself and my family to subject myself to the occupational hazard for such low pay).