Today may go down as the biggest day in math in at least two decades, if not far longer.In a development that crystallizes an existential shift in humankind’s oldest intellectual discipline, artificial intelligence has reportedly solved one of the six open “million-dollar” problems in mathematics. The achievement proves that the equations that govern the motion of fluids are fundamentally flawed.“This is a Deep Blue–Kasparov moment,” wrote mathematician Tristan Buckmaster, referring to the sea c...