[PaulHoule]

From the viewpoint of a space colony food is a renewable resource as after humans “consume” the food the food is now CO2 and other waste products. Martians may vent CO2 but I’d think asteroid colonists would seek to recycle every bit of volatile that they can.

[lm28469]

That's good sci fi, meanwhile we're not even sure a human could live on mars for any extended period of time given it has 1/3rd the gravity and may completely fuck up our internal processes such as vision, blood pumping, maintaining bone density, risks of hernia, &c.

We're talking about solving the n+100 problem while we're not even sure n0 is possible. It's cool to talk about terraforming Mars but we fucked up our 100% human compatible system in 200 years of industrialisation, idk if people realise how completely disconnected from reality they sound

[schiffern]

I expect especially resource-limited colonies could eventually use a double hull, with vacuum pumps to actively re-capture leakage.

A standard mechanical vacuum pump can reach 1/1000th of an atmosphere, so in theory this scheme should be able to reduce leak rates to only 1/1000th that of an equivalent single-hull design.