The idea in this thought experiment is not that the AI parses this sentence in the context of human culture (then it would likely comprehend that the actual intention is to maximize the economic success and eventually the human preferences of its creator). What is meant is that the objective is crudely implanted into the AI as an ultimate goal, in a similar way to how sustenance, pain avoidance and affiliation are very basic goals in our cognitive system. It is not entirely obvious that this is a stupid thing to do; hence the thought experiment. Will the AI suppress its urge once it comprehends human culture enough to understand the intentions of its creator? Will it rather successfully learn all the tricks to convert matter into paperclips before it considers studying human values? If the AI does not have a curiosity objective, it will likely not care about us very much, apart from the information that helps it optimizing its objective function.