Found in 2 comments on Hacker News
ldiracdelta · 2017-12-26 · Original thread
_Not_ recalling an ad doesn't mean that it isn't actually in your brain. Professor Robert Cialdini sited research in his book "Pre-Suasion" that the most effective ads were those that were _not_ recalled by users. You're effected by ads more than you think or recall.

* https://www.amazon.com/Pre-Suasion-Revolutionary-Way-Influen...

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