Your job isnt to know it but to spend as much time as poss doing ratzon haborei
And how do you know the ratzon HaBorei? By learning about the mitzvos and the proper way to perform them.
Sure, I could spend a year learning four blatt gemara with all the meforshim. But that leaves me ignorant of everything else I need to do. True, Torah study may be an end in and of itself — but it’s not purely that — it is also a means to a different end — the practice of Halacha — and I have to consider that end as well. I don’t have the time to spend a year covering 4 blatt of gemara — there’s too much else out there to learn. Perhaps others can be content to spend a year to learn every single tiny detail about one narrow topic — but not me.
The Wolf