Actually, only #1 and #2, "simple statements about what these objects will be doing", are relevant. The 'nouns' points are misleading at best. OO is all about b

Actually, only #1 and #2, "simple statements about what these objects will be doing", are relevant. The 'nouns' points are misleading at best. OO is all about behavior ('services'), not about data. A class doesn't encapsulate data, it encapsulates state. That's a big difference that many OO aficionados don't realize. Another source of confusion is that in some OO languages 'everything' has to be a class. A Java class in many cases isn't a class in terms of OO. Java Beans e.g. certainly are not OO classes.