The future of humanity will be shaped by artificial intelligence. Now some of the best brains working on the technology are riven by a debate about a four-letter acronym that some say contributes to the field's well-documented diversity problems. NIPS is the name of AI's most prominent conference, a venue for machine learning research formally known as the Annual Conference on Neural Information Processing Systems. Researchers at tech companies including Google and leading universities allege that the name contributes to an atmosphere unwelcoming to women. The acronym has long inspired anatomical jokes about nipples; others dislike the word's racist connotations.