True. Carmack was polishing idtech for a decade, and his work is always pleasant to tinker with.
Now, what is outstanding in Fabrice's work is that his curiousity projects often end up being breakthroughs.
I mean, i have like hundreds of these. Can emacs do that? I make a compiler to do that? How fast can i make this bytrcode to run?
And it is cute at best.