you should say, is it really important to have thinking ability when you have head or just the head would be enough ? i am not being sarcastic in here, but just emphasizing the point, head is very much visible but not the mind, likewise having human force is easy but not the coordination among them, when you have water force it is natural to dig a ground or fix the pump set and lay the pipelines to derive the water towards the requirement and for its proper utilisation, likewise, utilization of human resource in a right manner for right purpose has to be planned and coordinated well..... this is what we precisely called human resource management....