MR is indeed a hallucination:
Polly shivered, and was aware that someone was walking beside her. She looked
up and groaned.
‘You’re a hallucination, right?’
OH, YES. YOU ARE ALL IN A STATE OF HEIGHTENED SENSIBILITY
CAUSED BY MENTAL CONTAGION AND LACK OF SLEEP.
‘If you’re a hallucination, how do you know that?’
I KNOW IT BECAUSE YOU KNOW IT. I AM SIMPLY BETTER AT
ARTICULATING IT.
‘I’m not going to die, am I? I mean, right now?’
No. BUT YOU WERE TOLD THAT YOU WOULD WALK WITH DEATH
EVERY DAY.
‘Oh . . . yes. Corporal Scallot said that.’
HE IS AN OLD FRIEND.YOU MIGHT SAY HE IS ON THE INSTALMENT
PLAN.
‘Do you mind walking a bit more . . . invisibly?’
OF COURSE. HOW’S THIS?
‘And quietly, too?’
Now, for Making Money, I'll.... ooooh, puppies!