"one theory that could explain..."
“I have detected," Ford said, "disturbances in the wash."
Arthur asked him to repeat what he had just said because he hadn't quite understood his meaning. Ford repeated it.
"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."
"What?" said Ford.
"Er, who," said Arthur, "is Eddy, then, exactly, then?"
Ford looked angrily at him.
"Will you listen?" he snapped.
"I have been listening," said Arthur, "but I'm not sure it's helped."