there was one red flag that made me reconsider his human side/moral backbone:
in the days of Quake-1, ID collaborated with Rendition to define what the hardware should look like; that's when
he did a 180*:
<<... Quake is not going to do Z-buffering.” ... And then halfway through Quake I said, “Well I changed my mind. We are using Z-buffering...>>
Rendition V1100 not having (performant) z-buffering contributed to the company failure.