Free Photo Think back to ancient leaders who looked to the stars or the flight patterns of birds just to predict the future.

Forbes contributors publish independent expert analyses and insights. Writes about the future of finance and technology, follow for more. Joint probability teaches us to calculate combined outcomes.

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Hey mathematicians! My name's Ms Szalek and welcome to maths. Today we're going to focus on probability ...