Woz, Bernt Wahl and Doug Engelbart.

July 6, 2013

Bernt Rainer Wahl is a mathematician, entrepreneur and author. He was an early pioneer in the field of Chaos and Fractal Geometry and authored Exploring Fractals (1994) and co-authored The Fractal Explorer (1991).

​Douglas Carl Engelbart (January 30, 1925 – July 2, 2013) was an American engineer and inventor, and an early computer and Internet pioneer. He is best known for his work on the challenges of human–computer interaction, particularly while at his Augmentation Research Center Lab in SRI International, resulting in the invention of the computer mouse,[6] and the development of hypertext, networked computers, and precursors to graphical user interfaces.[7]