Someone working for Sen. Mark Begich’s campaign might have been studying Aristotle. Begich’s latest ad, “Alaska’s Son,” which will run statewide on cable and broadcast, has ethos, pathos and logos, and is beautiful to boot. And it shows that Begich will use everything he has to win.The narrator is Begich’s wife Deborah Bonito and it features their 11-year-old son Jacob. It also features Begich’s father, former U.S. Rep. Nick Begich, who disappeared in 1972 while traveling in a small aircraft from Anchorage to Southeast Alaska. The plane was never found.