Roberto Alagna should have known that you can’t win when you take on the La Scala loggionisti, says Neil Fisher. “If you venture into the lions’ den, prepare to get bitten. For all Alagna’s sad back-pedalling since the explosion — “my throat was closed off . . . I couldn’t even speak a sound” — the overriding impression is that he just couldn’t cope with the criticism. And so he did the unforgivable: he fled.”