Blind? Don't be stupid! We Sydney Anglicans do what Michael Jensen says and mix with Christians who testify to Christ in vastly different contexts...and know all about groupthink!
And what a profound statement ... " Ironically, who ‘we’ really are is a group who is ever aware of the human tendency to make an idol out of ‘us’. We aren't really 'us' if we don't get this"... I never understand anything Michael Jensen says...that's why I'm a goat!