Rather, this kind of deep knowledge can only be achieved by qualitative research techniques. There are many types of qualitative research, each of which can play an important role in understanding the design landscape of a product.

• 只有定性的研究方法才能发掘深层的信息，定性的研究方法有很多种，每一种在完成整个产品的设计全景方面都起着非常重要的作用。