[yourapostasy]

This is a controversial finding, and not well-accepted nor even abided by where it is a literal life and death matter, like in nuclear submarines [1] or the ISS. Either the LLNL experiment is somehow flawed, or systems designs that crew members depend upon for their lives for months at a time without any pause for the past few decades are poorly designed. By Occam's Razor, I'd rather look at the relatively simpler experiment first before I looked at these complex life support systems, and if anyone is to pursue the LLNL study further, they probably should start there. I'm willing to buy the hypothesis there are cognitive differences, but they would have to adequately explain what has been going on in submarines and the ISS that we missed earlier.

[1] https://wattsupwiththat.com/2012/10/17/claim-co2-makes-you-s...