Howdy!

Fine thanks. (Except that I should have given an exam today, and -yet another time- I didn't!)

The objects are initially created as X, then serially reblessed into subclasses of X. Each subclass extends the state and behavior from there.

So far so fine - nothing unexpected or surprising! But then... I must apologize for maybe it's just me, but I'm not really sure which exact statement of mine you're addressing.