We are not an endangered species ourselves yet, but this is not for lack of trying.

The party and the Krikkit warship looked, in their writhings, a little like two ducks, one of which is trying to make a third duck inside the second duck, whilst the second duck is trying very hard to explain that it doesn't feel ready for a third duck right now, is uncertain that it would want any putative third duck anyway, and certainly not whilst it, the second duck, was busy flying.

"O Deep Thought computer," he said, "the task we have designed you to perform is this. We want you to tell us...." he paused, "The Answer."
"The Answer?" said Deep Thought. "The Answer to what?"
"Life!" urged Fook.
"The Universe!" said Lunkwill.
"Everything!" they said in chorus.
Deep Thought paused for a moment's reflection.
"Tricky," he said finally.
"But can you do it?"
Again, a significant pause.
"Yes," said Deep Thought, "I can do it."
"There is an answer?" said Fook with breathless excitement.
"Yes," said Deep Thought. "Life, the Universe, and Everything. There is an answer. But, I'll have to think about it."
...
Fook glanced impatiently at his watch.
“How long?” he said.
“Seven and a half million years,” said Deep Thought.
Lunkwill and Fook blinked at each other.
“Seven and a half million years...!” they cried in chorus.
“Yes,” declaimed Deep Thought, “I said I’d have to think about it, didn’t I?"

[Seven and a half million years later.... Fook and Lunkwill are long gone, but their descendents continue what they started]

"We are the ones who will hear," said Phouchg, "the answer to the great question of Life....!"
"The Universe...!" said Loonquawl.
"And Everything...!"
"Shhh," said Loonquawl with a slight gesture. "I think Deep Thought is preparing to speak!"
There was a moment's expectant pause while panels slowly came to life on the front of the console. Lights flashed on and off experimentally and settled down into a businesslike pattern. A soft low hum came from the communication channel.

"Good Morning," said Deep Thought at last.
"Er..good morning, O Deep Thought" said Loonquawl nervously, "do you have...er, that is..."
"An Answer for you?" interrupted Deep Thought majestically. "Yes, I have."
The two men shivered with expectancy. Their waiting had not been in vain.
"There really is one?" breathed Phouchg.
"There really is one," confirmed Deep Thought.
"To Everything? To the great Question of Life, the Universe and everything?"
"Yes."
Both of the men h