4 ms·

>Go higher and it gets even less plausible. 2.0g is like carrying your twin. FWIW there are people who weigh well beyond 150kg so I'd argue it would be plausib

by ginko 4y ago

>Go higher and it gets even less plausible. 2.0g is like carrying your twin. FWIW there are people who weigh well beyond 150kg so I'd argue it would be plausible. Will people be able to perform at peak physical level? No. Will they probably manage for a couple of days? I'd say so.

TremendousJudge 4y ago
It's not the same though. When at higher gravity, you're not carrying more weight like a backpack or like extra fat -- your regular tissues weigh more. This includes your blood and other fluids, but your heart is still the same strength. I'd expect that to make a difference.
- hammock 4y ago
  That’s a really interesting point. I wonder if there are “artificial exohearts” or something that we could install on the extremities to keep vital body fluids like blood and lymph flowing when the heart is not strong enough.
  - KineticLensman 4y ago
    Then you have to toughen up the internal tissues so that blood vessels aren't ruptured by high-pressure blood (which can cause strokes, permanent vision loss if retinal arteries are affected, etc). High blood pressure also affects kidney and liver function, amongst other things.
  - tablespoon 4y ago
    > That’s a really interesting point. I wonder if there are “artificial exohearts” or something that we could install on the extremities to keep vital body fluids like blood and lymph flowing when the heart is not strong enough. Isn't that basically a g-suit, like fighter pilots already wear? https://en.wikipedia.org/wiki/G-suit https://en.wikipedia.org/wiki/G-suit Also, from that page: > The resting g-tolerance of a typical person is anywhere from 3–5 g depending on the person.
    - marcosdumay 4y ago
      Yes, but that tolerance is for seconds of exposition, not days.
    - ksaj 4y ago
      This is akin to the landing impact when you jump from something low enough that you won't die from it. You wouldn't survive it in a sustained manner, but the brief jolt, while maybe causing your innards to ache, is tolerated.
  - nradov 4y ago
    Athletes already use compression boots which apply pulsed pressure to the lower legs as a sports recovery modality. But those are only used for maybe an hour at a time. I doubt whether they would compensate for the physiological stress of sustained high acceleration.
- Johnny555 4y ago
  Wall-E found a solution this problem - people don't need to walk, they have mobile beds to move around. https://www.youtube.com/watch?v=s-kdRdzxdZQ https://www.youtube.com/watch?v=s-kdRdzxdZQ
sneak 4y ago
> FWIW there are people who weigh well beyond 150kg so I'd argue it would be plausible. Those people have been training for months/years to carry that weight.
- ksaj 4y ago
  Indeed. It's also not pulling down with that same weight on each of their internal organs.

by ginko 4y ago

TremendousJudge 4y ago

It's not the same though. When at higher gravity, you're not carrying more weight like a backpack or like extra fat -- your regular tissues weigh more. This includes your blood and other fluids, but your heart is still the same strength. I'd expect that to make a difference.

hammock 4y ago
That’s a really interesting point. I wonder if there are “artificial exohearts” or something that we could install on the extremities to keep vital body fluids like blood and lymph flowing when the heart is not strong enough.
- KineticLensman 4y ago
  Then you have to toughen up the internal tissues so that blood vessels aren't ruptured by high-pressure blood (which can cause strokes, permanent vision loss if retinal arteries are affected, etc). High blood pressure also affects kidney and liver function, amongst other things.
- tablespoon 4y ago
  > That’s a really interesting point. I wonder if there are “artificial exohearts” or something that we could install on the extremities to keep vital body fluids like blood and lymph flowing when the heart is not strong enough. Isn't that basically a g-suit, like fighter pilots already wear? https://en.wikipedia.org/wiki/G-suit https://en.wikipedia.org/wiki/G-suit Also, from that page: > The resting g-tolerance of a typical person is anywhere from 3–5 g depending on the person.
  - marcosdumay 4y ago
    Yes, but that tolerance is for seconds of exposition, not days.
  - ksaj 4y ago
    This is akin to the landing impact when you jump from something low enough that you won't die from it. You wouldn't survive it in a sustained manner, but the brief jolt, while maybe causing your innards to ache, is tolerated.
- nradov 4y ago
  Athletes already use compression boots which apply pulsed pressure to the lower legs as a sports recovery modality. But those are only used for maybe an hour at a time. I doubt whether they would compensate for the physiological stress of sustained high acceleration.
Johnny555 4y ago
Wall-E found a solution this problem - people don't need to walk, they have mobile beds to move around. https://www.youtube.com/watch?v=s-kdRdzxdZQ https://www.youtube.com/watch?v=s-kdRdzxdZQ

sneak 4y ago

> FWIW there are people who weigh well beyond 150kg so I'd argue it would be plausible. Those people have been training for months/years to carry that weight.

ksaj 4y ago
Indeed. It's also not pulling down with that same weight on each of their internal organs.