While media attention was focused on the sale of a rare Leonardo da Vinci painting, a piece of modern art being derisively described as “ketchup on canvas” just sold for nearly $50 million dollars. During an auction at Christie’s in New York last night, de Vinci’s 500-year-old “Christ as Salvator Mundi” ended up selling for a whopping $450 million dollars, more than four times its estimated...