Yes. As far as using streams as an example, I never understood why 
support for write-only streams was ever needed. What's wrong with just 
assuming all streams are readable? Then this classic dilemma just goes 
away. It seems to me that whoever wrote the first internal streams 
implementation for Smalltalk simply got that part wrong, and no one 
questioned it for a long time. I wouldn't make this a primary motivating 
example for traits (hopefully there's a better one).


-C