But he did admit there were some "knotty problems" for anyone not connected to the web and so unable to get a full list of the products contaminated with Sudan 1.

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Among other things, the company has moved more aggressively into offering combinations of business software and technology services that help companies and governments solve knotty problems, such as catching welfare fraud.

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Knotty problems of the same sort arise whenever you add an ethical overlay to what is normally a purely economic decision, like shopping for coffee, paying an electric bill or buying an index fund.

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Governments, businesses, educational systems and non-profits could all tap the power of the crowd to solve and understand knotty issues, whether those problems have to do with healthcare or supply chains.

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