In twenty years, will the best evidence show very substantial (>one quarter) declines in fertility rate (relative to couples trying equally hard to conceive in the past) due to decreasing sperm count, in at least one country?
35
163
Ṁ788Ṁ610
2043
18%
chance
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Related to ACX post "Declining Sperm Count: Much More Than You Wanted To Know". Although this says "in at least one country", this is just about whether one country is able to detect it, and I will only mark it as true if it seems to be related to a global phenomenon; ie if there is a chemical spill in one country that causes its fertility to decrease, this will not count.
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I'm buying YES as a hedge/arbitrage to the https://manifold.markets/ScottAlexander/in-twenty-years-will-the-best-evide market, not because I think this is likely.
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