I am not sure what you are trying to do with your examples. Can you
explain the intent?

Set was just an example object that's quick to test the behaviour. My intent

is to understand this behaviour, bc. Smalltalk usually goes to great length

to keep the messaging system consistent. But in VisualWorks the behaviour

is the same, so I presume (and Marcel confirms) that without this the performance

of the whole system suffers.

greetings, Lorenz