Mmmm....well, it seems to work reasonably well. When it does go off at a tangent, it really goes, so that seems to imply that it is to some extent predictive. The fact that it is better to speak fairly quickly, also seems to indicate that it views sentences in coherent lumps rather than the part of its sum.
The book seems now to say that more than one can use it.

I'll just not mention any more information, lest it be duff.
DO NOT USE THE FUNNY TEXT TO TEACH IT.
I had an uncontrollable fit of the giggles when I got to the part about electricity being held in by air pressure (Stephen Hawking) and coming to us on wires with squirrels hoping about flicking their tails.
I suppose it's possible that Hawking really did say that.
Okay, now to write a chapter before bed.