One critique of scaling up is that it raises the question of the extent to which one intervention could work in other cultures/societies o Culture matters, so in scaling up we have to think about how culture matters ex. Kinds of beliefs of infant swaddling or breastfeeding if we're trying to expand a child nutrition program o Cultural difference is not an impediment to scaling up, it just has to be considered Challenges: economic, administrative, political ex. question of political will... Brazil ministry of health was willing to take flack and heat for what he was doing