In the days before the 1/6 Select Committee opened its hearings on the Capitol attack, the airwaves were filled with the usual cynical, desultory baby-nihilism that rises along with anything worth hoping for these days. Will anyone watch? Will the right people watch? Will it make any difference? The pre-game answers, in the main, were no, no way and hell no, not necessarily in that order. What a difference a few hearings make. The 1/6 Committee — thanks in no small part to the GOP’s own-goal error in not stuffing the panel with distraction machines like Jim Jordan — has...