The attack was by definition discriminate. I don't think there's an attack in modern history that was more targeted and had less collateral damage. The attack targeted hundreds Hezbollah leaders, who bought and used those pagers. There was minimal collateral damage among civilians amounting to unverified allegations that a child of a Hezbollah member was maimed, and some minor other damage. The explosives in the pagers were measured in grams, and the explosions were relatively small, specifically to minimize collateral damage.