On the one hand, Joe Biden — who is running as the candidate who promises to make the presidency boring again — made the most obvious — that is, boring — selection for his running mate on the Democratic ticket.California’s Kamala Harris was the logical choice all along — a nationally known senator from a big state who had run for president and acquitted herself well, even though she dropped out early. That speaks well of Biden. Logical selections are the ones that have performed well over time.On the other hand? The fact that Harris — who is Black and South Asian — was the safe choice based on…