Our social relationships with each other—our culture, our learning, our art, our shared jokes and shared sorrow, raising our children, attending to our elderly, and together dreaming of our future—these are the essence of what it means to be human. We thrive as individuals and communities by caring for others, and being taken care of in turn. Collective infrastructural systems that are resilient, sustainable, and globally equitable provide the means for us to care for each other at scale. They are a commitment to our shared humanity.