A while back I asked my brother the trivia question "who invented the cotton gin?", to which he immediately replied "Eli Whitney". Directly following his answer was the inquisitive phrase "how did I know that?"
While his answer was correct (although some controversy exists), there is still the question of how he knew it. Obviously, it was drilled into his head sometime during his education because the teacher thought it was important. My next question, however, was not something included in his curriculum: "who invented the transistor?"