Claim: Researchersshould not limit their investigations to only those areas in which they expectto discover something that has an immediate, practical application. Reason: It isimpossible to predict the outcome of a line of research with any certainty. 结论:科研人员不应该仅仅将研究工作限制在容易在短期内有实际应用的领域。 原因:不可能肯定地预测一系列研究带来的结果。