He certainly can be too. There’s no rules about there having to be a single grandfather. What’s important to me about Carmack is that he was unwavering about t

He certainly can be too. There’s no rules about there having to be a single grandfather. What’s important to me about Carmack is that he was unwavering about the need for high fps and low latency through the entire pixel pipeline (as well as a lot of other things), and that he brought the skills to make it possible. A VR industry based on a common denominator of 60fps with 10ms panel response times was very close to being the reality (and IMO that industry would have killed VR’s adoption for at least another decade)