Human nature makes us demand easy answers. Naturally, then, the Giants' 4-0 victory against the Cubson Wednesday will be viewed as a natural extension of the morning'sclubhouse shakeout and wake-up call. The players know better. They understand that this absolutelycritical victory had more to do with two big swings and asuffocating pitching performance by Madison Bumgarner, who allowedtwo hits in eight innings and matched a career high with 11strikeouts.