Daniel Libeskind has had his way with an addition to the Royal Ontario Museum. “Taken on its own terms, the addition is extraordinarily skilled and tremendously exciting. That scrum of jostling shapes, exploding out of a U-shaped courtyard formed by the museum’s stern, much- altered 1914 building, electroshocks dull Bloor Street.” But “in too many ways Libeskind has been allowed to run amok.”