"We have to acknowledge that we won't answer many of the big questions in our brief twinkling of a 21st-century lifetime: even if science can determine the correct answer, we won't get to enjoy hearing it. This situation calls for an openness in approaching the big questions of our existence. When there is a lack of meaningful data to weigh in on a problem, good scientists are comfortable holding many possibilities at once, rather than committing to a particular story over others. In light of this, I have found myself surprised by the amount of certainty out there."