I guess it depends on who the intended audience is - I doubt too many people who follow Oculus&#x27; developer blog weren&#x27;t immediately picturing all of the flaws he describes while reading that. I&#x27;m only a dilettante in 3D VR, but I didn&#x27;t need any images&#x2F;videos to understand exactly what he was describing. I suspect Carmack was going for information density for people who&#x27;d understand here, rather than &quot;3D VR games dev errors 101 for beginners&quot;, and he&#x27;s pretty good at writing for his audience.