No one is physically stopping you from not being dumb, but yourself.
And how would you know this?
There are several sources who claim exactly this: that there are forces who purposefully have been physically, chemically, psychologically and socially trying to make us dumb.
Go back to the Panem and Circenses from Roman times, when the rulers were deliberately poisoning the bread with lead to make the populous dumb and docile.
The same continues now with fluoride (known neurotoxin, drops IQ by roughly 10 points), aspartame (known neurotoxic), glyphosate (known antibiotic, shikimate pathway disruptor, causing gut-brain axis dysfunction leading into brain-fog, mitochondrial deficiency and neural demyelination).
This is all known, has been for decades, and it's still being protected, continued and even made more widesprad.
If that doesn't fit the criteria of physically trying to make you dumb (and these are just 3 examples, easy to show at least half a dozen more), then I don't know what is.
And how would you know this?
There are several sources who claim exactly this: that there are forces who purposefully have been physically, chemically, psychologically and socially trying to make us dumb.
Go back to the Panem and Circenses from Roman times, when the rulers were deliberately poisoning the bread with lead to make the populous dumb and docile.
The same continues now with fluoride (known neurotoxin, drops IQ by roughly 10 points), aspartame (known neurotoxic), glyphosate (known antibiotic, shikimate pathway disruptor, causing gut-brain axis dysfunction leading into brain-fog, mitochondrial deficiency and neural demyelination).
This is all known, has been for decades, and it's still being protected, continued and even made more widesprad.
If that doesn't fit the criteria of physically trying to make you dumb (and these are just 3 examples, easy to show at least half a dozen more), then I don't know what is.