because the interview is supposed to ask same questions as real job, and in real job there are rarely big hints like you are describing. On the other hand, "he

because the interview is supposed to ask same questions as real job, and in real job there are rarely big hints like you are describing. On the other hand, "hey I have 6TiB data, please prepare to analyze it, feel free to ask any questions for clarification but I may not know the answers" is much more representative of a real-life task.