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Trobe was affected with some time distortion, called a chronological infection. He cycled through his 90 year life in seconds, which was time looped. He knew that he was poorly when the Sixth Doctor asked him, as a child. As a teenager he became a bit aggressive. In middle age he told the Doctor how he and Warma created a Chronon bomb. He wanted to stop the experiments. (AUDIO: Of Chaos Time The)