Although once considered to be unrealistically futuristic, versions of the universal translator already exist. This means that in the future, if you are a tourist in a foreign country and talk to the locals, you will see subtitles in your contact lens, as if you were watching a foreign-language movie. You can also have your computer create an audio translation that is fed into your ears. This means that it may be possible to have two people carry on a conversation, with each speaking in their own language, while hearing the translation in their ears, if both have the universal translator. The
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