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.

Example Input: Does 'egoistic' and 'egotistic' mean the same thing?.
Example Output: No. While similar, they have some important differences. Consider this note on usage from the Oxford Dictionaries: The words egoism and egotism are frequently confused, as though interchangeable, but there are distinctions worth noting. Both words derive from Latin ego ('I'), the first-person singular pronoun. Egotism, the more commonly used term , denotes an excessive sense of self-importance, too-frequent use of the word 'I,' and general arrogance and boastfulness. Egoism, a more subtle term , is perhaps best left to ethicists, for whom it denotes a view or theory of moral behavior in which self-interest is the root of moral conduct. An egoist, then , might devote considerable attention to introspection, but could be modest about it, whereas an egotist would have an exaggerated sense of the importance of his or her self-analysis, and would have to tell everyone

Example Input: In Russian we have the term ''. I would translate it as 'asshands' which literally means that your hands grow out of your behind and you can't do anything right (or do anything at all). Example: Dad: 'Hey son, can you hang up this picture on the wall?' Son: 'No dad, my hands grow out of my behind, I'll probably end up hanging it upside down' (Or 'I am a _____' - i.e. the term I'm looking for.) Is there anything similar in English? Is the term 'screw up' the one? Or are there any other ones? I want slang specifically, preferably American.
Example Output: 'All thumbs', according to Wiktionary 'clumsy, awkward, not dextrous.' 'Klutz', according to Wiktionary 'a clumsy or stupid person.'

Example Input: I'm a non-native English speaker, and my automatic spellchecker seems to accept both therefore and therefor. Is one orthography preferred ? Is that a British vs. American difference ? Or an old vs. more recent orthography ? Or something else ?.
Example Output:
Therefor means for that. For example: Here we sell guitars and accessories therefor. Therefor is one of a whole series of adverbs: thereof (of that), thereafter(after that), therein (in there), etc. If you are familiar with German - the Germanic sister of English - you can find a direct analogy there: for = fur therefor, for that = dafur (literally, therefor) Therefore, as you must know, means as a (logical) consequence

