The expression ‘unconscious bias’ is back in the headlines. First came the good news that Oxford’s Somerville college had rescinded its requirement that all students be tested for ‘unconscious bias.’ (This was the result of a successful campaign by the Speccie’s own Toby Young through his Free Speech Union.) But then came the bad news that the Governor-General’s staff will be told to do a bizarre ‘privilege walk’ to identify their ‘unconscious bias.’