A delegation from the Ecksian Fereation, an interstellar power focused on planet Ecks, approaches you. They have been studying humanity, its rapid leaps in technology and initiative, and they’re worried. Not for themselves, as they only live 150 years, but for future generations.
They estimate that within about 3000 years humanity will pull itself out of the Sol system, start terraforming planets and be the dominant political force in the galaxy.
The Ecksians are too moral to oblitarate the humans whilst techonogically backward and also to sterilise them without permission. Howver, by some quirk of their ethical issues you are considered to be someone who they feel can speak for the whole of humannity, (why, I don’t know)
They offer you this deal; they can either leave immediatley effecting nothing on Earth or they can painlessly, imediately and non-invasively sterilise every human. At this moment a sperm somewhere is fertilizing an egg, that will be the last one ever.
If they leave, they tell you that quickly Earth’s energy reserves will run out, causing widespread famine and misery, and it’ll probably be about 200-300 years before humanity reaches the technical solution, which they’re not abnout to share.
If you agree to the mass sterilsation, they will spend the next 150 yearsensuring every human lives a happy luxurious existence. Thosethat want to continue working will have a massive increase in choices of roles; those that don’t will have massive increases in choices of leisure time; Ecksian games, art and fictional works are numurous and top-notch, everyone’d have free transit throughout the Federation, and medicine that would give an average 150 year lifespan with no degeneration, almost all diseases cured. Any advantage you can think a highly technical race can give, they would.
This is a one-time thing, if you say no, they, (or their descendants) will never return. Regardless of your choice, no human will ever know it was you that made it.
Assume for the scenario that they are telling the truth and you believe them, I know in reality you would not trust them.
So do you take the deal?