'Users' is a fascinating meditation on life and parenting in the digital age

One of the earliest images in Natalia Almada's virtuoso documentary Users is of an infant, tightly wrapped and strapped to a Snoo smart crib, robotically being rocked to sleep to the sound of manufactured white noise. By recreating many of the sensations of being in the womb, the Snoo has become a popular gadget for new parents who need help tucking their little ones in. In many ways, it's the pinnacle of a smart gadget: Developed by Dr. Harvey Karp, with product design by the renowned Yves Behar, the Snoo solves a problem that parents have faced for millennia. But what do we lose if a robot can automatically soothe a crying baby, effectively replacing a nurturing parent. That's the question at the heart of Users, which premiered at the Sundance Film Festival this week.