Climate change will do this. No additional conspiracy required.
There’s research showing people get incrementally less intelligent as oxygen ratios get worse. There’s also research showing that plants (which really all of our food depends on one way or another) become less nutritious and more sugary/starchy as carbon dioxide ratios rise. That’s before we even factor in things like endocrine disruption from plastic particulate ubiquity and dozens of other pollutant effects.
We really are the frog in the slowly boiling pot, and even when citing sources on this kind of thing people would rather argue about it. 🤷♂️ (I’m not going to bother. Can be looked up easily enough if you’re so inclined.)
You know that CO2 concentration is at 421 ppm, (0.0421%) up from 280 ppm in 1850? That change is negligible compared to the 21% oxygen. Standing in a crowd or being inside causes a much higher variation of the oxygen concentration. Even moving up 2 meters changes the amount of oxygen molecules per volume by more than that.
There’s research showing people get incrementally less intelligent as oxygen ratios get worse.
And I thought the Lead Generation thing was bad, we’re fucked.