Bill Gates, born in 1955, is one of the most influential figures in the computing world, known for co-founding Microsoft and revolutionizing personal computing. His impact on technology has been significant, as he played a crucial role in making computers accessible to the masses.

Andy Hertzfeld, also born in 1955, is celebrated for his playful approach to software development. He was a key member of the original Apple Macintosh team and contributed to shaping the user interface we recognize today. These tech visionaries are highlighted in Walter Isaacson's book about Steve Jobs, illustrating the dynamic environment of innovation during that era.