I hear that that explanation a lot. I'm not sure I buy it. As for why: 1. I don't have much data except myself but I can't remember buying from those ads. I

I hear that that explanation a lot. I'm not sure I buy it. As for why: 1. I don't have much data except myself but I can't remember buying from those ads. I can remember smiling at them a lot though. 2. That wouldn't explain why I get ads for the exact same product I bought. Here's another argument I remember from marketing at engineering school: Some marketing is justified even after the customer has bought -especially with expensive items - to make them feel like they did the right thing (which in turn should make them less likely to return it.)