John Carmack was the lead programmer of the id video games Commander Keen, Wolfenstein 3D, Doom, Quake, Rage and their sequels. Carmack is best known for his innovations in 3D graphics, such as his Carmack’s Reverse algorithm for shadow volumes. In August 2013, Carmack took the position of CTO at Oculus VR. His first meeting with Steve Jobs was quite interesting.
Apple CEO Tim Cook sent out an internal email to staff, in remembrance of the fourth anniversary of the passing of the company’s co-founder Steve Jobs. In the text, he encouraged employees to learn about what he was like to work with.