Yes it can be defined.
Now I admit I'm a newbie here at Enworld but my understanding is that the point of a plus thread is that the OP is allowed to make certain assumptions and then we argue as if these assumptions are true.
I'm fine with the assumption at a high level. I'm curious about the detail so that some educated answers in regards to the assumption can be made, thats all.
The Devil is in the detail as they say.