what is industrial design?

There has recently been an interesting discussion on Core77 about trying to define what industrial design is.  Its clear, that at the time of writing, a whole bunch of Industrial designers cannot agree.  Design is such a personal thing and everyones reason for doing it is different.  Some people want to make existing designs look more stlish, some (like myself) want to improve their functionality.

'My industrial design is about identifying a product that doesn't work as well as it could and trying to make it work better.'

But I'm happy to admit, I'm not happy with that definition.