It’s hard reigning in shoals of red herrings. An example: I’m reading a book by Richard Eyre, who directed King Lear – and a famously successful production of Guys and Dolls at the National Theatre in 1982.  Guys and Dolls leads to Ian Charleson (who played Sky Masterson) and to Eric Liddell (the part Charleson played in Chariots of Fire) and suddenly I’m standing at Holy Corner in Morningside, where you’ll find the Eric Liddell Centre, which supports vulnerable people in Edinburgh.