"But this is typical of the way in which evolution works. The forces of natural selection will always operate in such a way as to bend and shape a new mutation, and to preserve a variation of it that offers the best prospects of survival for the species as a whole. The raw mutation that made the Lunarians what they were was too extreme and resulted in their downfall. Improvement has taken the form of a dilution, which results in a greater psychological stability of the race. Thus, we survive where they perished."

Danchekker paused to finish his drink. The statues remained statues.

"What an incredible race they must have been," he said. "Consider in particular the handful who were destined to become the forefathers of mankind. They had endured a holocaust unlike anything we can even begin to imagine. They had watched their world and everything that was familiar explode in the skies above their heads. After this, abandoned in an airless, waterless, lifeless, radioactive desert, they were slaughtered beneath the billions of tons of Minervan debris that crashed down from the skies to complete the ruin of all their hopes and the total destruction of all they had achieved.

"A few survived to emerge onto the surface after the bombardment. They knew that they could live only for as long as their supplies and their machines lasted. There was nowhere they could go, nothing they could plan for. They did not give in. They did not know how to give in. They must have existed for months before they realized that, by a quirk of fate, a slim chance of survival existed.

"Can you imagine the feelings of that last tiny band of Lunarians as they stood amid the Lunar desolation, gazing up at the new world that shone in the sky above their heads, with nothing else alive around them and, for all they knew, nothing else alive in the Universe? What did it take to attempt that one-way journey into the unknown? We can try to imagine, but we will never know. Whatever it took, they grasped at the straw that was offered and set off on that journey.