I think what he/she meant is:
In Anesthesia, you make decisions on the fly with whatever clinical data you have. This is unique to Anesthesia. You 'order' a medication, you mix it, you give it. There is no pharmacy verification, nursing verification like on the floors.
On the floors or even in the ICU, things go through multiple levels of safety checks. If you order something suspiciously dangerous, you will get a page from pharmacy immediately, or the nurse asking why?? This is not the case in Anesthesia. Also, the medications routinely given by Anesthesia in the OR are some of the most lethal that are only given by code team or in the ICU.
Also like TypeADissection alluded to above, Anesthesia in the OR is usually just the resident + attending. If something were to go down, it's up the those 2 to manage the crisis, not the case for other specialties on the floors.