I must study Politicks and War that my sons may have liberty to study Mathematicks and Philosophy. My sons ought to study Mathematicks and Philosophy, Geography, natural History, Naval Architecture, navigation, Commerce and Agriculture, in order to give their Children a right to study Painting, Poetry, Musick, Architecture, Statuary, Tapestry and Porcelaine.
–John Adams, 12 May 1780

And trigonometry since being a good shot is need to put the meat on the table.
Good point. Better add, “understanding the internet.” How else are we gonna get our blogs out there?