Also - this would be less risky than going to space.

My instinct says >50% of soldiers between 20-30 would instantly volunteer for this. Probably much higher, like 80%. Especially those unmarried.

There would be no lack of fit volunteers.

Its ethically problematic obviously, but so is asking grocery store workers to stock shelves as 'essential workers' during a pandemic when they have no PPE.

I think probably there's a 100% chance that so-called 'essential workers' who are not medical staff will die from Coronavirus due to the pandemic.

The rate of death among the 'very young' is exceedingly low, and I think there were always complications.

If we can narrow it to 19-26 year old, super healthy, without complications ... I think the 'possibility of harm' would be quite low.

It's not beyond the realm of ethical consideration.

Now - remove some ethnical barriers - such as what drug companies used to do by testing drugs in Africa, or what authoritarian governments do all the time (aka China) and you'll have this done in a heartbeat.

I think China/CCP wouldn't think twice about trying this on young men in jail. Is my cynical take.