instruction:
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.
question:
I'm currently writing an article that includes two contexts of communication: effectiveness and competence. Incompetent people can misuse terminology all day and the ideas are effective and do technically work. However I'm looking for a word or term that has two or more meanings and the misuse of could lead to bodily harm or even death; this is to promote the idea of the aspect of competently communicating one's ideas. What word if not used competently could end up leading to injury or death in a context that most people could understand with little-to-no explanation?.
answer:
Does it have to be a single word? Derek Bentley was convicted of the murder of a policeman in 1952 and hanged the following year. He and an accomplice, Christopher Craig, were burgling a warehouse and Craig was armed with a pistol. When the police cornered Bentley and Craig, Craig drew the gun. A policeman told Craig to give him the gun and Bentley allegedly responded, 'Let him have it, Chris.' Craig shot the policeman in the shoulder and later shot another policeman dead. During the trial, the prosecution claimed that 'Let him have it' meant 'shoot him', whereas the defence claimed that, if Bentley had said those words at all, he meant 'give the gun to him.' Bentley was subsequently posthumously pardoned in 1993 and his conviction quashed in 1998, because of a multitude of problems, not least Bentley's mental state, an apparently falsified confession and the trial judge failing to properly direct the jury.


question:
If you look at this gif of a drone replacing a lightbulb, you'll understand what concept I'm trying to find a word for. Using dynamite for fishing would be another example. I'm looking for a word that describes the use of high-tech equipment, for a purpose that is normally filled by low-tech equipment, usually done out of laziness or amusement. This is specifically relating to technology (overengineering is very close).
answer:
'Bringing a gun to a knife fight' or 'Using a sledgehammer to crack a nut' or 'Killing a mosquito with a bazooka' are idioms that convey the sense of overkill, but perhaps not the overly-complex nature of the technology. 'If you have a hammer, every problem looks like a nail' is another close-but-maybe-not-quite-right idiom. It might also be a 'Rube Goldberg solution' or a 'Heath Robinson' way of getting something done, or the solution might simply 'overengineered'. Sources and related questions that might give you some ideas: 'To shoot out of cannon into sparrows' Phrase for overusing just-learned skills? A word that means 'a solution in search of a problem' Saying that refers to not going overboard in solving a problem when a simple solution exists What's the word for Unnecessary Complexity


question:
Possible Duplicate: 'Did it close' vs 'Has it closed'? As a English non-native speaker it is difficult for me to understand when I must use present perfect or past simple because in my official language there isn't the present perfect tense. I know that present perfect is related to something that happened in the past but its result is important now. But for instance: The message has been sent. The message was sent. Please help me point me out any examples/contexts where I should use 1. instead of 2.
answer:

1 means that the action happened just now. You would typically see it in your e-mail program just after you send an e-mail. Your program might give you this message to let you know that the message you just sent has indeed been sent. 2 refers to something that happened at some time in the past. It could have been an hour ago, a day ago, or even a century ago! But it wasn't just now.