Sherlock
I think to a certain extent you ar right, but to another you are not!
The mix of both learning in the classroom bonded with learning hands on with an experienced cc is the by far the best way to gain the experience and know how.
What does worry me about you, is that you dont seem to know the fundermentals of carpet and upholstery cleaning!!
I have not got a single problem with you as a person, after all, i don't know you!
but i do feel that it is only a matter of time before you come unstuck, and end up owning the item that you have cleaned!!
Ian