Looking to the past to uncover the truthTo play this video you need to enable JavaScript in your browser.This video can not be playedLooking to the past to uncover the truthCloseWatch the full episode on BBC iPlayer.SubsectionDisabilityPublished25 AprilShareclose panelShare pageCopy linkAbout sharingRelated topicsDeafness and hearing-impairmentFollow Deafness and hearing-impairmentclose panelYou are now following Deafness and hearing-impairmentUpdates from your News topics will appear in My News and in a collection on the News homepage.Read description