The problem for us is how do we get those people to recognise that the Conservative Party is relevant again and what I will do is say to my party, we now must be obsessed with the issues that obsess British people, health, education, the environment, the things that they think that for too long we don't care about and that's the real problem and challenge.

BBC: News | BREAKFAST WITH FROST | Conservative leadership contender Iain Duncan Smith

At one extreme are companies such as Zappos, the online shoe retailer, that obsess about keeping even small-ticket, occasional customers lastingly happy with their purchases.

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Like high-end winemakers, these producers obsess about methods, singing the virtues of organic gardening, hydroponics (soilless agriculture), even aeroponics (with nutrient misted on the plants).

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