“Pacifiers are also blamed for delayed language development, which seems logical, too—how's he going to talk with that thing in his mouth?—but there's no evidence for this either. There is evidence that the lack of evidence hasn't stopped people from making the claim: a British speech therapist even admits she was disappointed her study's data showed no link between pacifiers and speech problems. And teeth? Pacifiers only screw up the palate if used past the age of five, well after the vast majority of children have stopped.”