It sheds some light, from the perspective of tactical warfare, on what made David's course of attack so brilliant. The article leads to three major conclusions:
- Traditional warfare would have been heavy armor and swords, both of which favor bigger, stronger warriors. Fighting in this way concedes the battle to Goliath at the outset, since it fights it on his terms. David rejects this form of combat (1 Samuel 17:38-39).
- David's style instead plays to his strengths (speed, agility, accuracy with a sling from his days as a shepherd). He's even carrying his a pouch for the stones, since he's used to chasing away beasts in this way (1 Sam. 17:40), and he's used to fighting off animals in this way (1 Sam. 17:34-36). And, of course, since Goliath is a giant, he's a giant target. The size that would be a strength in hand-to-hand combat is a weakness in avoiding deadly-fast rocks flying at one's head.
- Additionally, David throws the rhythm of the battle by running at Goliath while Goliath slowly advanced (1 Sam. 17:48). This is classic for successful underdogs: the basketball team did it through forty-eight straight minutes of full-court press, and by contesting every single on-sides pass; T.E. Lawrence did it by traveling hundreds of miles a week, attacking all over the place, and forcing the Turks to constantly shift their over-sized forces towards defense.
- David's success, like T.E. Lawrence's and Coach Ranadivé's, is that he was an outsider. It's one of the reasons he was so easily able to adopt a style that suited him -- he hadn't be trained in the style he was "supposed" to be doing -- that is, the traditional form of warfare that was getting all of the other Israelites killed. He's such an outsider, having essentially wandered onto the battlefield by mistake while bringing food to his brothers (1 Sam. 17:20); after the battle, the King and his General still have no idea who he is (1 Sam. 17:55-58).