xxx: About school education they usually say in this way: "How you are not ashamed not to know such a date, the rules, which is equal to sinus 30 - this is the same school program " and similar phrases. They are usually opposed by Sherlock Holmes’s argument that we do not want to blur our heads with unnecessary facts that are not necessary for work and everyday life. Indeed, knowing the meaning of the notorious sinus 30 may never be useful. But, IMHO, the value of everything that took place in school is not in concrete facts, but in the development of thinking in general, the ability to quickly process information, to highlight the main, to draw conclusions from what has been read. Each solved algebraic example, read and understood text contributed (neural connections, synapses, etc.) And man has become a little faster thinking in certain aspects. Therefore, you probably should not boast of the very fact of knowledge (if you read the book only to reach a certain level expected by society), as well as ignorance of anything.