Mcfarland imo is corect
I like to start out some meetings and asking employee's how to make kool aid. Very simple but do you know how many really do not know exactly how to make kool aid?--- all of them! That is why there is instructions on the back of every package.
Its the same at my business. Just because you came to my company from another company where all you did was mow, or trim, or install irrgation or whatever it does not mean you know how to perform those functions as I require at my business. Yes I would train you, but what if you wanted to go over the the exact procedures I talked about during training? The operations manual would provide that clarity, along with a standard in which I expect them to perform.