The perfect archaeological mystery solved in two tweets. Top tweet: "In the right hands, a sling can hit with the force of a 9mm bullet." Bottom tweet: "Mysterious hole found in bison skull supposedly from 40,000 years ago." Congratulations, paleontologists, you've just discovered our ancestors' impressive marksmanship. Turns out David vs. Goliath wasn't fiction—it was a hunting manual. Next research paper title: "Ancient Ballistics: How Prehistoric Humans Sniped Dinner From 50 Paces."