Do our bishops really think that having a holy door in each cathedral is an effective witness to the gospel call to mercy (News from Britain and Ireland, 2 May)? Many Catholics, let alone people outside the Church, are liable to be merely bemused by a symbol which means little or nothing to them. It all looks a bit too much like a flight into piety (as with their anodyne questions in preparation for the Synod on the Family), designed to avoid difficult questions about mercy, family life and sex