english: This is used in reference to a report in 2007 by the National Research Council in the United States, wherein they tried to understand how we can look for life elsewhere in the universe, okay, especially if that life is very different from life on Earth. If we went to another planet and we thought there might be life there, how could we even recognize it as life?
non_english: Je použitý v posudku správy Národnej výskumnej rady z roku 2007 v USA, v ktorom sa pokúšali pochopiť, ako sa môžeme rozhliadať po živote vo vesmíre, špeciálne, ak je ten život veľmi odlišný od života na zemi. Ak by sme šli na inú planétu a mysleli, že by tam možno mohol byť život, ako by sme mohli ten život rozoznať?