By EMILY NEMENS

She was running along the Manhattan side of the East River—this was in the bucolic “before” times, prior to when the city tore up the East Village’s riverside park, chucking its eighty-year-old trees and modernist amphitheater and ebullient perennial flower beds in the name of future flood mitigation—when she felt a curtain being snapped up the back of her left calf, krrrrrik! More lightning than pain. At first. Then, it became very painful. A hot pain that ran an invisible line down the meat of her calf, like those sexy stockings with seams, but the seams had turned carnivorous and were nibbling at her flesh with tiny razor teeth. Running farther, even slow-jogging the 1.3 miles home, was out of the question (her mental math: more pain multiplied by less time in transit, or less pain times more minutes; the latter had the lower sum), so she slowly limped back from the river, putting as little weight on her left foot as possible. She wondered what she would do.