This is extremely wrong: CO2 impairment kicks in around 1000 ppm[1] possibly lower.
You can hit this breathing by yourself in an unventilated 3x3m room (literally measured in my house).
You can hit this breathing by yourself in an unventilated 3x3m room (literally measured in my house).
I wonder how many driving accidents can be saved by having a co2 monitor in the car.
i have felt bad in high co2 environments before but i have never been in a controlled high co2 environment.
Which is the point: if you're in a room trying to do deep work, that's likely a problem. I suspect submarines are all over the place here: you might be exposed to higher levels routinely but you also have regular access to chemical scrubbers and decent ventilation. I'd be fascinated to know what levels are tracked as normal.
So quite possibly an adaptive response?