In Smalltalk reloading a modified method will not reload a class or module to effect the reload. This is fundamental to the way Smalltalk works: a modified met

In Smalltalk reloading a modified method will not reload a class or module to effect the reload. This is fundamental to the way Smalltalk works: a modified method cannot alter the way anything outside the method is defined. Note that Smalltalk has no notion of anything like inlining or anything like that. I think that what the OP must have meant about this was that you can update a method without interfering with the program's current state, so while at a breakpoint say, you can fix a minor bug or perhaps add some debugging code or whatever, then resume, and all subsequent invocations of that method will use the new definition.