Because things can be devised like drones and drugs and data collection, and they can be devised by more people and cheaper ways for beneficial purposes and then, as we know from the news every day, they can be used for dangerous ones.
因为像无人飞行器， 药物，数据收集这些工具， 它们将会广为人所用， 成本越来越低， 然后，就像我们每天从新闻上知道的， 它们也有可能带来危险。