Yesterday, the Prime Minister gave a speech on education and young people. It was his big chance to show that he still has some big ideas for the country: to explain why one in three 11-year-olds still cannot read or write properly; to explain why we have more young people than ever before in prison, in debt or on anti-depressants; and to explain why under his Government we have the unhappiest children in the developed world and a care system in crisis. How is a bit of tinkering with the schools complaints procedure going to fix any of that?