Sentence:  I would accept that many of them behave like humans born on earth would, but that must be an artefact of poor translation or our poor understanding of their motives and objectives [<WSD>Watsonian</WSD>] or lack of vision on the writers part [Doylist - to borrow some terms from the Bujold mailing list - think 'as written by' Dr Watson or by Arthur Conan Doyle]. 
Meaning of the word marked with <WSD> tags:  From an in-universe perspective; of or relating to an explanation within the text; internal to the narrative.