The people of Earth develop nuclear power. Naron, a long-lived Rigellian who serves as the Keeper of galactic records, notes this achievement and records humanity as having reached maturity. Until he discovers something else... Despite the seriousness of the subject, Asimov keeps a light touch in this very short story.
A 1-minute read.
Naron of the long-lived Rigellian race was the fourth of his line to keep the Galactic records.
He had the large book which contained the list of the numerous races throughout the Galaxies that had developed intelligence, and the much smaller book listing those races that had reached maturity and had qualified for the Galactic Federation. In the first book, a number of those listed were crossed out; those that, for one reason or another, had failed. Misfortune; biochemical or biophysical shortcomings; social maladjustment, etc., took their toll. In the smaller book, however, no member listed had yet blanked out.
And now Naron, large and incredibly ancient, looked up as a messenger approached.
“Naron,” said the messenger. “Great One!”
“Well, well, what is it? Less ceremony.”
“Another group of organisms has attained maturity.”
“Excellent. Excellent. They are coming up quickly now. Scarcely a year passes without a new one. And who are these?”
The messenger gave the code number of the Galaxy and the coordinates of the world within it.
“Ah, yes,” said Naron. “I know the world.” And in flowing script, he noted it in the first book and transferred its name into the second—using, as was customary, the name by which the planet was known to the largest fraction of its populace. He wrote: Earth.
He said, “These new creatures have set a record. No other group has passed from intelligence to maturity so quickly. No mistake, I hope.”
“None, sir,” said the messenger.
“They have attained to thermonuclear power, have they?”
“Yes, sir.”
“Well, that’s the criterion.” Naron chuckled. “And soon their ships will probe out and contact the Federation.”
“Actually, Great One,” said the messenger, reluctantly, “the Observers tell us they have not yet penetrated space.”
Naron was astonished. “Not at all? Not even a space station?”
“Not yet, sir.”
“But if they have thermonuclear power, where then do they conduct their tests and detonations?”
“On their own planet, sir.”
Naron rose to his full twenty feet of hight and thundered, “On their own planet?”
“Yes, sir.”
Slowly, Naron drew out his stylus and passed a line through the latest addition in the smaller book. It was an unprecedented act, but, then, Naron was very wise and could see the inevitable as well as anyone in the Galaxy.
“Silly asses,” he muttered.