建造正确的产品，需要对愿景进行系统而严苛地测试，以发现哪些是聪明的想法，哪些是愚蠢的。
Building the right product requires systematically and relentlessly testing that vision to discover which elements of it are brilliant, and which are crazy.
人们仍然不知道放弃原有的产品愿景或范畴的具体原因。
The precise reasons for scrapping the product vision or scope remain unclear.
愿景是新产品能够足够快速地成长并且保持足够高的利润率，以至于能够弥补老生产线淘汰所造成的收入损失。
The hope is that the new product will grow fast enough and carry high enough profit margins to more than make up for the demise of all revenue from the old line.
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