The more you understand, the better the result of your work will be.
Understanding is a relative term.
Everyone understands something at every moment in his own way. But understandingmay be larger, and larger, and still larger. In this sytem we call understanding a certain possible maximum on a certain level of knowledge and being. You should think of why you come here, what you want from this system and why, what you can learn from it, why this sytem exists, why I talk about this system, what I wish to achieve by talking about it. There is no 'real' understanding.