--- - |2 This reply to the commentary by Keller et al. (2018) on the article “Universality Without Uniformity: A Culturally Inclusive Approach to Sensitive Responsiveness in Infant Caregiving” (Mesman et al., ) highlights key points of agreement emphasizing the sense of investing in synergies across research traditions. These include the importance of distinguishing between different parenting constructs, the need for more studies to test the presented theoretical assumptions, and the value of examining multiple caregiver sensitivity in relation to infants’ developing membership of a community. The only point of disagreement reflects the rigidity versus flexibility of the sensitivity construct. This reply argues that it is exactly the versatility of the sensitivity construct that makes it a valuable building block for bridges between fields. - Child Development, Volume 89, Issue 5, Page 1929-1931, September/October 2018.