Question: I've always wondered what this "isSelfEvaluating" stuff is 
good for. There are thirteen implementors and a single user in 
Array>>printOn:. Is there any *need* for Array>>printOn: to print a 
"self evaluating" expression? Why not just Array(element1, element2, 
....) just like any other collection?

We'd remove some 20 methods with no downside that I am aware of.

Cheers,
   - Andreas