gorilla/banana problem

S99-glossary.pod

@@ -740,6 +740,16 @@ Sometimes also a form of L</obfuscation>.
 Good morning/afternoon/evening.  Since the contributors are in many different
 timezones, one contributor's morning is another contributor's evening.
 
+=head2 gorilla/banana problem
+
+"You wanted a banana but what you got was a gorilla holding the banana and the entire jungle."
+says Joe Amstrong, Erlang creator, complaining of traditional
+L</OO> inheritance based environment inflexibility.
+In non L</dynamic languages>, you can't dynamically add L</attributes>/L</methods> for an L</objet>/L</class> so
+you end up shoving everything you may ever need in a deep class hierarchy.
+In Perl 6, the gorilla/banana problem is solved with L</roles> that group methods or
+attributes. A role can be dynamically added to a class or an object.
+
 =head2 grammar
 
 A feature of Perl 6 that uses L</regex>es to implement a grammar for parsing