PowerfulJRE

John Carmack abandoned his famous philosophy of releasing games only when they were finished. Rage took six years to develop, and he believes launching two years earlier with less ambitious technology would have avoided outdated design decisions and growing competition from Call of Duty and Battlefield.

Carmack's rocket company, Armadillo Aerospace, reached 92 kilometers before he abandoned its push to reach space. He sold most assets to team members rather than become dependent on NASA and Defense Department contracts that could sustain a company indefinitely without advancing its original ambitions.

Carmack considered SpaceX's financial pressure an advantage over Jeff Bezos's generously funded Blue Origin. Elon Musk visited Armadillo Aerospace during SpaceX's early years and later invited Carmack into an engineering meeting; Carmack believed SpaceX's near-bankruptcy after three failed launches encouraged faster experimentation than Blue Origin's cautious approach.

Virgin Galactic discovered that space tourists would pay twice what smaller rocket companies had anticipated. Carmack said entrepreneurs had planned around $100,000 tickets, while Richard Branson charged approximately $200,000 and still attracted customers, potentially making the difference between barely covering costs and earning meaningful margins.

Carmack fought opposition inside id Software to release its older game engines as open source. He established a policy of releasing previous-generation code after newer games launched, allowing enthusiasts to create modifications and preserve games such as Doom long after their original commercial lives.

Carmack helped revive consumer virtual reality after discovering that equipment costing up to $150,000 remained technically disappointing. Beginning in 2011, he assembled better hardware himself and connected with Palmer Luckey, helping establish the foundations of Oculus and eventually standalone consumer headsets.

Carmack visited Elon Musk's Neuralink and believed its brain implants could transform life for severely disabled people. He was less convinced by Musk's ambition to make humans competitive with artificial intelligence, predicting during the 2019 conversation that recognizable artificial general intelligence might emerge within a decade.

Carmack deliberately chose to remain an engineer rather than pursue the management career that might make him a billionaire. He preferred working roughly 60 hours weekly, disliked that meetings consumed half his time at Oculus, and periodically isolated himself in hotels for week-long programming retreats.