dynamic delegation / use

[Guenter Kniesel]

Dear Self programmers.

(I mean those who, unlike myself :-), 
 have written "real" Self programs).

I'm interested in the _practical_ use of dynamic delegation (DD).
- How often do you use DD? 
- Would lack of DD be a serious drawback for your applications?
- Are there typical examples or scenarios for the use of DD? 
- Are there programming techniques that are typically employed 
  in conjunction with DD / that rely on the availability of DD?
  
Would anyone from the Cecil group like to add his view of DD?
Is DD missing from Cecil because it wasn't considered useful,
or "only" for technical reasons, e.g. to ease having a static
type system?

Guenter