Brian Kernighan is 80 years old. Donald Knuth is 84 years. Both still write code and avoid most social/non-social media in general. It's amazing given how often

Brian Kernighan is 80 years old. Donald Knuth is 84 years. Both still write code and avoid most social/non-social media in general. It's amazing given how often we get surrounded by people giving up coding at rather young age for various reasons. Who else would you include in this class?