oneiric·há 7 meses·discussThe fluid in high pressure storage is a liquid, making the storage much cheaper. Liquid N2 (most of air) would require over 40 times more pressure or cold temperatures. Purifying out CO2 or any gas is generally a negligible cost.
oneiric·há 3 anos·discussThe Hungry Judge Effect has been debunked. Not that your larger point is not valid.