Thanks a lot for the explanation. I was in fact hoping to get a comment from you.
Your explanation is a bit tecnical so I'll need a bit time to digest it. So just one comment:
You said:
Although it usually doesn't make a lot of difference what something is called..
I must strongly disagree. Establishing a meaningful and COMMON nomenclature is allways a must for being able to communicate properly. Otherwise we end up where: you say tomato - I hear potato 
Aniss