A microscopic close-up of the bubbles in foam, whose movements mathematically mirror the process of deep learning, used to train modern AI systems. Credit: Crocker Lab Foams appear in everyday life as soap suds, shaving cream, whipped toppings and food emulsions like mayonnaise. For many years, scientists believed foams behaved much like glass, with their tiny components locked into disordered but essentially fixed positions. New research now challenges that long-standing view. Engineers at the