Lesson: Classical Mechanics
Dogs love playing fetch, but the game comes with two major problems. First, the ball rapidly develops a slimy coating of dirt and slobber. Second, few dogs understand complex physics. Dogs new to the game wildly chase after a rolling, hopping, chaotically bouncing ball, only to crash into fellow mutts at the dog park and crush the high expectations of their owners.
We live in a post-Newtonian world, so accelerate your dog's physics education with this automated ball launcher, called the Fetchtastic. The machine sends balls on perfect, arc-like trajectories every seven seconds. This allows dogs to analyze a near-ideal flying-ball system, helping them infer the paths of less-than-ideal flying balls (at least one can hope). The best part: Your dog will quickly learn to reload the launcher itself. Hello, slobber-free hands.