David Didau is a teacher, blogger and author of seven books about education. In this episode, David talks to Greg Ashman about how he became a teacher and the writing and blogging journey that has resulted in him changing his views about education over time. David and Greg elaborate on the conditions needed for people to change their minds before talking about David's new book, Intelligent Accountability. David explains the importance of humility and why 'mimetic isomorphism' - which David cannot pronounce - prevents us from learning through the wisdom of crowds. Finally, David explains why treating people equally is different to treating them fairly.