>The problem with many instructors is that they just teach and only know what's in the book.
>
>>Thanks, Rick, I guess I will need to re-learn. I was following the way we built the application with the instructor.

This one was a really great guy and he knew the subject and everything else perfectly. I think I may have misunderstood something, besides, the course is just the 'Introduction', so I guess it was a bit simplified. But he emphasized the importance of separating the concerns, the ability to easily replace each layer, etc.