Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.

Question: We were discussing something like pre-boss era, post-boss era. What word describes the era where the boss is still there? 
Answer: Peri-boss era. This prefix allows you to create delightfully clear parallel construction that covers all cases: pre-, before peri-, during post-, after Google [ pre- post- peri- ] for examples "in the wild". These prefixes are popular in medical terminology, such as pre-, peri-, and post-anesthesia.
yes

Question: It is common in American English to refer to a powerful person or organization as an 800 pound gorilla. The expression makes sense -- a gorilla of that size would certainly be intimidating -- but what's so special about the number 800? Searching "n lb gorilla" on Google for various values of n results in many more hits when n = 800 than when n is any other quantity. Also, the Google Ngram Viewer finds notable occurrences of the phrase "800 pound gorilla" in texts starting around the late 1970s; other sized gorillas don't seem to be mentioned at all. The Wikipedia entry for the idiom claims that the phrase is rooted in a riddle ("Where does an 800lb gorilla sleep?"), but that's just passing the buck. A 700lb or 900lb gorilla would be equally entitled to sleep wherever he wants to. Interestingly, the Wikipedia entry for gorilla states that the average male gorilla weighs about 400lb, occasionally reaching 500lb in the wild. Only obese gorillas in captivity have attained weights of 600lb. So the number doesn't even seem to be related to gorilla biology (except that it is safely larger than any known gorilla, save King Kong). Given that it's an arbitrary figure, is there any reason the number 800 would be more popular than any other? More generally, is there any relevant research into why some numbers would be more popular or pleasing than other in contexts like this? 
Answer: Quite large gorillas in the wild are at most 550 pounds; so an 800 pound gorilla is one that's oversized, even fat. As Wikipedia states, this phrase first originated with a riddle, "Where does an 800 pound gorilla sleep?" Ans: "Anywhere it wants." Because this is the standard idiom, when people want to speak hyperbolically they will sometimes exaggerate the number to "1,000 pound gorilla", or some other, even larger number. In short: no, the number 800 does not have any special significance, except perhaps with reference to the typical (male) gorilla's average weight (450 pounds).
yes

Question: For example, a computer security expert can be an expert and making a basic mistake, perhaps unrelated to his personality but highly relevant to his field of expertise and a mistake that just about anybody could do but just because he is a security expert he especially should not have done it. I don't mean stupid mistake or stupid error but I mean contradictory and almost similar to a double-standard. Jeff teaches English but he couldn't spell "occurrence". Or for example George is a professional Microsoft Windows programmer but he doesn't know what alt+tab does. Or Henry is a surgeon but he cut himself shaving. I don't necessarily mean something like a police officer who himself is corrupt or a judge who is corrupt because those are not accidents or mistakes but deliberate. Albert Einstein was a genius but couldn't remember his own address and entered the wrong house when going home. (Perhaps the above Einstein example is not a great example because scientist could be absent-minded.) I mean more like actually mistakenly missing the basics of your own speciality or making a human error that anybody else could do except you because you are supposed to be the specialist. I think the classic example could be Bill Gates trying to show how good Microsoft Windows is and it crashes. Or a news anchor, who should be a specialist in not making a word mistake, actually makes a word mistake. Or a judge or an attorney, who should be experts in law and rights, wouldn't know something trivial about law and right e.g. unknowingly about that blackmailing is a crime. I almost made such a mistake myself. I was an IT specialist and computer technician at a client's office and their boss was teaching himself the basics of programming and asking me about something basic. I actually got it right but I was not completely certain about something basic while actually being able to solve complicated and advanced problems for them. 
Answer: Not a single word, but one could call this a rookie mistake. An example is "Trump's Trade Chief Makes a Rookie Mistake". The Cato Institute's Dan Ikenson recently took Navarro to task for his views on trade. Ikenson says Navarro is making an elementary error when he writes: When net exports are negative, that is, when a country runs a trade deficit by importing more than it exports, this subtracts from growth. It's definitely not true that trade deficits always subtract from growth.

yes