Disconnection is the vital ingredient to the Scientology con.
Like the woman whose view was limited to only her experience of the tipping system, Scientologists have to have their view limited, as much as possible, to just their experience of it. So long as they continue to get gains they can be conned some more. Those that don't get gains, ditch them quick! Separate them from the ones still getting wins.
Paul said elsewhere that disconnection was the vital ingredient, which if it was abolished, the whole house of cards would come tumbling down.
But disconnection won't get abolished by the CofS because it is the vital element that keeps the whole scam going.
Disconnection may also be an indicator of Hubbard's madness, his paranoia, etc. That may be true, but the point is whether or not it is fuelled by madness it is highly utilitarian in that the winners must be disconnected from the losers otherwise the con is exposed.
Hubbard used suggestion and repetition and other tricks to increase the percentage of "winners", but that is secondary. The Scientology scam would still work with a lower success rate so long as you ditched and separated off the losers. Just like the betting scam would work with a 1 in 6 success rate or a 1 in 16 success rate, so long as the winners are kept uninformed of the losers.
Leon, your example of recovered failures is just another numbers game that Hubbard used to increase the successs rate. A percentage of such people will respond and turn from losers to winners.
But it is nothing to do with dice or lucky chance. It is purely a psychological numbers game.
Hubbard knew that a percentage of people will respond to suggestion and will experience something that is close enough to what he told them they would experience, that they will then identify this experience as proof that the "tech" works.
Add some clever people who help Hubbard synthesise spirituality and psychology into some sort of procedure and you have a "workable tech" so long as you ditch the ones it doesn't work on.
And above all don't let the winers talk to the losers! They may just find out that there are hundreds or thousands of losers for every winner and may actually realise that eventually they too will become losers themselves.