Advertising is bewildering because, among other reasons, its effects typically play out over time, may be nonlinear, and can interact with other elements in the marketing mix in creating sales.

• 广告是令人困惑的，原因有多方面，最具特征的就是其作用随时间的推移而逐渐减弱和消亡，这可以是非线性的，也可以与营销组合中的其它因素相互作用而创造销量。