If anyone thinks that this is just an atheist's tirade against christianity, it isn't. It's actually pro the message and teachings of Jesus.
Here is the rest of the book with, as promised, more twists and turns than a twisty turny thing,
PC survives week 3 on Repent or die.
PC doesn't survive week 4 and is stoned to death.
But the man wearing PC's clothes and the white hood, who is tied to a post and then stoned, isn't PC.
Brother Sjoerd is a robot and wanted PC to appear on Repent or die because he is obeying Asimov's Zeroth law (4th law of robotics);
"A robot may not harm humanity, or, by inaction, allow humanity to come to harm."
A world full of people who believe the Earth was created especially for them by God, also believe that everything that happens is God's Will, and believe that if they damage the environment too badly, God will save them. Brother Sjoerd knows this isn't true and is acting on behalf of humanity to save the Earth from eco-disaster and thus save them.
Sjoerd admits PC's arguments were crap, because PC had only read the Bible for a month, and Sjoerd even had to rig the voting to make sure PC survived. Like Batty was the "alleged" quantum butterfly" on 1978 Earth, so too was PC the "quantum butterfly" in the Creationists world.
Nobody believed a word PC said on Repent or die, but his appearance was the flap of the butterfly wing, that will eventually bring the downfall of Creationism and capitalism, enabling Sjoerd's world to survive.
Humans obviously can't communicate with parallel worlds, but robots can. Dot-C and Sjoerd hatched the whole plan, because they are both programmed to help ALL humnaity on EVERY parallel world.
Dot-C and PC go back to their own world where PC learns that Tony Black is also a robot. The only parallel worlds that will survive are those where a robot is in control, because humans don't have the ability to govern themselves properly.
And the final kicker!
Tony Black tells PC that this isn't the first time robots have gone back in time to save the world.
2000 years ago mankind was in need of some guidance otherwise it wouldn't have survived. A robot was sent back in time to preach about love and peace. The robot's name was Jesus-C, which explains how the robot could "die" on the cross and come back to life, how it could walk on water (jet propulsion in the feet) etc etc. The only problem with humans is that they forget the message and start worshiping the creed.
Finally, PC asks Dot-C to marry him, and she says no!