Let’s make it clear: babies do not have emotions. An Oxford paper finds brain signatures in babies that track emotions. Cool result, but interpreting this as evidence that babies has emotions is fundamentally flawed: It conflates similarity in brain signatures and behavior like crying with similarity in the underlying processes. In adults, emotions do not merely shape what we say or do. When we fear something, something deeper happens: attention narrows, decisions accelerate, and processing is reorganized across multiple systems. Babies can cry as if they are fearful and may even encode a brain circuit associated with fear. But that does not show that fear reorganizes its processing in the way it does in adults. Moreover, similar situations can produce different emotions in adults. A roller coaster can terrify one person and exhilarate another. Yet all babies cry when put on roller coasters. The entire attempt to demonstrate that babies have emotions by finding a stable “neural signature” is flawed: Even in adults, researchers have not found consistent neural signatures for discrete emotion categories. Please stop conflating similarities in output with similarities in the processes that generate them.