Videos shared online show people speaking the word "racist" into the Dictation tool. Sometimes it is transcribed correctly - but on other occasions it is turned into "Trump", before being quickly restored to the correct word. The BBC has not been able to replicate the mistake, suggesting Apple's fix is already taking effect. Prof Bell said Apple's explanation of phonetic overlap did not make sense because the two words were not similar enough to confuse an artificial intelligence (AI) system. Speech-to-text recognition models are trained by inputting clips of real people speaking alongside an accurate transcript of what they say.