And if all else fails, you can always follow the lead of a guest who sat next to the 6th Earl Fitzwilliam, an apparently ‘dour’ and silent sort of man, in the 1890s. Having failed to get any sort of jolly dinner conversation going, the guest finally resorted to picking up a silver spoon and asking him, ‘Which reflection do you prefer of yourself: the convex, or the concave?’