I heard you're having troubles learning English so I thought I could help you out a bit with telling you how I learned quickly and correctly! I started by learning the English alphabet so later on when I bought English books I could read them with no problems. I took online classes for grammar and spelling checks which helped me a lot. My family knew I was trying to learn English so they helped me out by only speaking to me in English! I studied a lot in my free time and used books from the library to help me out some more. I hope this helps you, it surely helped me.
I mean the encyclopedia is 40 years old, and it cant be factual or reliable because she failed it. It never said anything about it being valuable so theres your answer. (I also knew the word beforehand but theres some sort of explanation)
