But this is required for the hiring staff to give the appearance of being important and needed within the company. If managers really understood how effectively non-management engineers can find and hire acceptable candidates when you remove the bullshit from the process, they would be confronted with the cognitive dissonance of their choice to staff up an army of HR and recruiters and talk all day about "ZOMG how hard it is to hire a good engineer!" and "look out for the toxic worker" and other such drivel.
