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Anthony Grant Gordon, BSc

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

The Promotion of Breastfeeding Intervention Trial (PROBIT) Study Group¹ is to be congratulated on acquiring much new data on the important but neglected topic of breastfeeding and IQ. However, as well as the known unknowns, the unknown knowns need just as much attention. The literature review (for which none of the authors took responsibility!) omitted many pertinent facts that would have simplified interpretation of their results. A major obstacle to scientific progress, especially in this field, is the known knowns, "what you know for sure that ain't so" (Mark Twain). Myths kill. Crucially, Donald Rumsfeld ignored known knowns! The mechanical sompe theory² was designed to explain why certain serious infections were more common in nonbreastfed infants, but it covers a wider field and explains otherwise odd findings.¹ It has also led to a critical evaluation of competing beliefs.

The first critical distinction to be made in . . . [Full Text of this Article]

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Breastfeeding and Child Cognitive Development: New Evidence From a Large Randomized Trial
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