I remain unconvinced by Kamala Harris. The Democratic vice-presidential nominee took to the stage on Thursday night as the final act of a four-day convention—an appearance hyped with the pomp and spectacle of a rock concert or a Hollywood awards show. But the fanfare seemed desperate, an attempt to inflate the standing of someone who, as yet, hasn’t earned it. What unsettles me is that Harris was fast-tracked into the finals without facing the rigors of the primaries, without winning over her fellow candidates and, crucially, the voters. Who decided that she was the preferred candidate? On wha…