Before JACK Quartet played Georg Friedrich Haas’ “In iij. Noct,” String Quartet No. 3 Tuesday night at the Lincoln Center White Light Festival, the stage crew turned the lights off in the Clark Studio Theater for a test run, so that everyone in the audience could gauge whether they could withstand the extended period of essentially total darknes. The lights were down for one minute, and once the last light went out I counted to myself, “one-one-thousand, two-one-thousand.” By the time I hit twenty, the lights were on their way back up. That is the profound power that darkness has,