All I am saying is that he is basing his UI concept in the "Immediate Mode" term from computer graphics, which has always had partial frame rendering. This idea of re-rendering all the frame is not only dumb, it is unecessary. But now I understand why he was so amazed by what Sutherland did in the 70s in the OOP video. Which is good, because you should be able to make Damus Android at least twice as fast as it is today if you get a better UI toolkit.