My favorite is the control theory anecdote (point 2 here: https://gigaom.com/2013/10/10/5-fun-and-terrifying-facts-abo... ). Some people are just able to grasp the core of a large number of topics really fast, and born-in-1964-Jeffrey seems to be one of them. It’s fairly clear he would be very well versed at various tech architectural designs even if he didn’t have a CS background, I’ve worked with several people (ostensibly not at that level) and it’s some of the most fun times ever. They’re not burdened by any traditions and are often able to make breakthroughs in ideas that people steeped in the field are unable to themselves.