One could argue that fuzzy logic systems…that learn through their own ‘experience’ do not have a structure…

Look carefully and you realize that the difference lies in composition vs behavior. These systems are composed of elements based on well thought out architecture and structure; but at the same time their intended behavior is to evolve without pre-defined structure.

So there is underlying architecture masked so effectively that you could believe that it does not exist….sounds like a perfect definition of architecture, doesn’t it?