The curse and virtue of ignorance

“Half the money I spend on advertising is wasted; the trouble is I don’t know which half.” This famous quotation from John Wanamaker, a US department store merchant (1838-1922), should be familiar to all students of marketing...

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“Half the money I spend on advertising is wasted; the trouble is I don’t know which half.” This famous quotation from John Wanamaker, a US department store merchant (1838-1922), should be familiar to all students of marketing.

Though thought-provoking, however, it is no more inspirational than simply suggesting that we are usually far more ignorant than we think we are in making decisions in life – not just over matters related to advertising spending.

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