Smalltalk.true.
takes a while, but it does not try to call #quitPrimitive. Which it would if Methodfinder would not be based on a positive list.
Ah, and a negative list was I think not used as it is too dangerous wrt. to completenes. If the positive list is incomplete, you miss
a hit. If the negative list is incomplete, you woud crash in some nasty way.�
Just look at the lists and how many methods you find that have been removed years ago...
It's not just methods like #quitPrimitive. In general, with the image based nature you could end up modifying state of objects
in the image by accident, and realize it weeks later.
e.g. this means one would very carefully protect the reflective model, to not accidentally modify the methodDictionary, for example.