"I have detected," he said, "disturbances in the wash." [...]
"The wash?" said Arthur.
"The space-time wash," said Ford. [...]
Arthur nodded, and then cleared his throat. "Are we talking about," he asked cautiously, "some sort of Vogon laundromat, or what are we talking about?"
"Eddies," said Ford, "in the space-time continuum."
"Ah," nodded Arthur, "is he? Is he?" He pushed his hands into the pocket of his dressing gown and looked knowledgeably into the distance.
"What?" said Ford.
"Er, who," said Arthur, "is Eddy, then, exactly, then?"
# "There!" said Ford, shooting out his arm. "There, behind that sofa!"
Arthur looked. Much to his surprise, there was a velvet paisley-covered Chesterfield sofa in the field in front of them. He boggled intelligently at it. Shrewd questions sprang into his mind.
"Why," he said, "is there a sofa in that field?"
"I told you!" shouted Ford, leaping to his feet. "Eddies in the space-time continuum!"
"And this is his sofa, is it?" asked Arthur, struggling to his feet and, he hoped, though not very optimistically, to his senses.
"How can I tell," said the man, "that the past isn't a fiction designed to account for the discrepancy between my immediate physical sensations and my state of mind?"
He hoped and prayed that there wasn't an afterlife. Then he realized there was a contradiction involved here and merely hoped that there wasn't an afterlife.
Anything that happens, happens.
Anything that, in happening, causes something else to happen, causes something else to happen.
Anything that, in happening, causes itself to happen again, happens again.
It doesn't necessarily do it in chronological order, though
The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at or repair.
They obstinately persisted in their absence.
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Reading: Hitch hikers guide to the universe