The title of the HN post "History of T (paulgraham.com)" is isleading, as this article was not written by Paul Graham himself. "Olin Shivers: History of T (paulgraham.com)" would be clearer.

Thanks for the personal take on Scheme history.

> It ran on Vaxes & 68000's, which had also just come out.

It ran on Vaxen and 68000s, which had also just come out.

> All hot compilers do DFA.

Note here, DFA stands for Data Flow Analysis (not Deterministic Finite Automata, another compiler acronym).

> the deepest and most powerful part of my diss, in my opinion, is the part (a) about which no one seems to know and (b) which is on the shakiest theoretical ground: environment reflow analysis. I would surely love it if some interested character one day takes that piece of my diss and really takes it someplace.

I know that feeling. But my experience is the author is best-suited to do that themselves.