Philippe Marschall writes:
 > They are real in every Smalltalk but Squeak. That's why we have #fixTemps.

There are two separate issues:
1) Why Anthony's VI4 work was rejected?
2) Why we haven't yet incorporated the new compiler work that Anthony
did then Markus has been maintaining?

1) is of interest only if you're interested in how the community has
reacted to performance improvements that cheated but got caught in the
past. 

2) is much more interesting now. What is stopping us from adding the
new compiler work in Squeak 3.10? It would be very nice to see proper
closures in Squeak. What's stopping us?

Bryce