It is never safe, however, to project the future just by extrapolating current trends. Surprise is inevitable, so the NIC also identifies what it calls “game-changers,” or outcomes that could drive the major trends off course in surprising ways.
但凭借当今趋势预测未来从来都谈不上准确。出人意料的情况不可避免，因此国家情报委员会还指出了所谓的“意外因素”，也就是能以出人意料的方式导致主流趋势偏离的结果。