Figured out how Z80 processor assembler language works and created 3 person multiplayer game on it without knowing anything about programming or reading any books at age of 14.
Received great PhD level education by age of 23.
Have been developing software and applications for 20+ years since then, including in Silicon Valley since 2009.
Have been working in all environments (corporate, startups), had many different clients as a consultant (100+), programmed in all languages, all operation systems, have been working will all databases. I've seen it all.