Fuzzy Front End: The messy “getting started” period of product development, when the product concept is still very fuzzy. Preceding the more formal product development process, it generally consists of three tasks: strategic planning, concept generation, and, especially, pre-technical evaluation. These activities are often chaotic, unpredictable, and unstructured. In comparison, the subsequent new product development process is typically structured, predictable, and formal, with prescribed sets of activities, questions to be answered, and decisions to be made. (See Chapter 6 of The PDMA HandBook 2nd Edition.)
模糊前端:产品开发的凌乱“开始”期，产品概念还很模糊。在正式产品开发流程开始前，有三个任务:战略性计划、概念产生和技术预评估。这些活动比较凌乱，不能预测而且非结构化。比较起来，其后的新产品开发流程更具结构化和更高的预期性，更正式，有一系列可以描述的活动，待回答的问题和待决定决策。
