Generate the answer for a given question. The question requires common knowledge of English. Make sure that the answer is in detail, long, consistent with the context, and requires general knowledge of English. To be less repetitive, please vary your language for each question. Give a proper explanation to answer, and if necessary, provide the definition of various terms. And conclude your answer if it's long. If you have used other resources (e.g., Merriam Webster's.) to answer the question, include citations in your answer. You don't need to paraphrase the context of your resources, but make sure that your answer is consistent and complete.

Ex Input:
is it 'a usual' or 'an usual'? 'A usual' sounds more correct in my head ('Today was a usual day.') than 'an usual', but u is a vowel. Which one is correct and why?.

Ex Output:
Usual (pronounced /ju.u.l/ as in you) begins with a consonant sound and, as such, it should be preceded by a not an. As an aside, I cannot help but point out that the sentence Today was a usual day is not usually heard in regular conversation. Today was an unusual day is what one might hear, instead! Indeed, I rarely hear the construction a usual. The definite article is more commonly used, in my experience: That's the usual thing. In place of a usual, one would also be more likely to hear not an unusual: Today was a usual day / Today was not an unusual day This is a usual occurrence / This is not an unusal occurrence or This usually happens You are right in saying that a usual sounds weird. As speakers, we tend to avoid constructions which, though correct, do not flow easily from the mouth. In sum, the following are valid and commonly used alternatives: not [an] unusual the usual usually

Ex Input:
A co-worker and I are fairly strongly divided on how to pronounce Linux. For a northern Midwest American (Milwaukee area, Wisconsin, to be exact), should it be pronounced lin-uh ks or li'nuks? pronunciations from: Linux. (n.d.). Dictionary.com Unabridged. Retrieved August 15, 2011, from Dictionary.com.

Ex Output:
From the Linux Wikipedia page, here's how Linus Torvalds pronounces it: /'l.nks/

Ex Input:
Let's imagine a hypothetical business: Mistake Corp. Mistake Corp makes a lot of mistakes, and as it turns out, the reason they make these mistakes is typically the same. 90% of the time Mistake Corp makes a mistake, it's because of misinformation. I suppose misinformation is the opposite of a linchpin for Mistake Corp. I'd like to be able to use the word like so: 'Misinformation is the [anti-linchpin] of Mistake Corp' What non-ambiguous word, other than 'anti-linchpin', can I use to describe something that is a frequent cause for mistakes to those who aren't as English-savvy?.

Ex Output:
I'd say that misinformation is the pitfall for Mistake Corp. A hidden or unsuspected danger or difficulty: 'There are obvious pitfalls of such behavior, if it ever developed into a habit.' They indeed seem to fall in time and again; check the box for unsuspected...