Lyn Gardner's theatre roundup: Three Kingdoms and the fourth estate
Simon Stephens's play has stirred up a hornets' nest of debate about how critics approach radical work. Plus an early taste of this year's Edinburgh festivalGetting criticalIt felt as if something shifted this week with the fervid debate over Simon Stephens and Sebastian Nübling's play Three Kingdoms, which has just finished at the Lyric Hammersmith in London. It's given voice to all sorts of issues " from the repre…