To ask a more general question is to skip a step in knowledge. You essentially guide your answers by being more general with the question. Example (for the love of god, please, do not quote this as you would a hamster analogy): Jimmy had to buy an apple for his pie. This pie will be an item of food at his grandma's birthday. To buy this apple he has to make 25 cents. (What he does not know is that his friend has an extra applepie already made). Jimmy figures he must find a job to pay for the apple. But he is too young to work anywhere. He has to contemplate how to make money to get the apple if he can't work. He figures he could beg on the street or steal money from his parents. He tries to beg on the street but to his best luck, he is not able to even get a penny. He then tries to steal his parents money. He is successful in this attempt and makes his way the store. He buys the apple and takes it home to make his pie. But wait, he doesn't know how to make a pie. He must go on the internet or ask his sister. He checks the internet but the internet is down, so he must ask his sister. His sister decides she could help him and they make the pie together. After he finishes his pie, he walks over to his friends house to play video games. As he walks in he sees that his friend also has an apple pie. His friend tells him he could have it if he wan'ted because his friend didn't really like apple all that much.
This shows a quick analogy that asking a more general question can eliminate all of the specific question, providing you know the answer. So if Jimmy would have searched for an apple pie instead of 25 cents, he could have saved his own time.
How does this apply to our big question, simple. If we ask a question that we know the answer to, we can eliminate all of the useless specific questions (If Jimmy would have searched for an apple pie, why whould he need to beg on the street for 25 cents).
If anyone would be interested in continuing Jimmy's adventures in a day by day story, just post " "