> word.  http://c2.com/cgi/wiki?DuckTyping my initial impression of
"duck typing"
> was equivalent to dynamic typing, but there seems to be a little more
to the
> mallard definition.
> i would appreciate an example of code demonstrating how to introspect
a 
> "hey, what kind of object are you?" message/method.

The zen of duck-typing:
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/100511