Image of bust of George Boole

Bust of George Boole at University College Cork • Photo by William Murphy (CC BY-SA 2.0)

Image of slide rule

C. Raymo Sr.'s slide rule • Photo by Tom Raymo

Image of fractal

A Mandelbrot set • Wolfgang Beyer (CC BY-SA 3.0)

Image of mathematical notes

Excerpt from a notebook of Ramanujan (Public Domain)

Image of balls in lottery machine

Photo by dylan nolte on Unsplash

Random numbers that aren’t

Thir­ty years ago, at about the time I began to study sci­ence, I came across a book called “A Mil­lion Ran­dom Dig­its.” Here, in a vol­ume as thick as the Boston tele­phone direc­to­ry, were page after page of num­bers with no appar­ent pat­tern. No mat­ter how long you stud­ied the num­bers, there was no way to pre­dict what dig­it would occur next.