One would also need to admit that the US spends more per pupil than all but a small handful of countries. And that one could improve the underpaid situation by spending more on teachers and improving their work environment and less on stuff that doesn't do that.

That sounded interesting, but when I read up on it, I saw that those alloys didn't actually have significantly lower reactivity. They have significantly lower surface reactivity, which is a good thing, but when they burn, they burn hot. The problem is that when it starts to burn in reaction with air in an environment well over both the melting points and ignition points of the alloy, it's 95% or more magnesium and that generates a lot more heat per unit volume (and mass) than steel would.

This is where the observation that a considerable portion of your material is ceramic spheres with pressurized nitrogen or halogen gases becomes relevant.

I merely answered the question. True motives are off topic.

What is it about the means that unjustifies the end? Because to me, cyborging a cockroach is less evil than killing a cow for meat.

There's also the Belgium Free Congo State and the eugenics movement. And I think it's only a matter of time before some environmentalist themed group decides to try involuntary population reduction on people they don't like.

Ugh, and again.

Which isn't relevant when you have fires with temperatures hotter than these temperatures. A warship would have (or have inflicted on it) a variety of means to achieve these elevated temperatures. I don't see here direct discussion of the actual concern, the high reactivity of magnesium.

I get that the original poster was being bombastic, but I still don't buy that magnesium alloys are as stable in hot fires as you imply. It's worth noting in particular that warships have, and have inflicted on them, a variety of means for achieving temperatures hotter than what you mention.

Which is where most criticism of idontgno started. I already had read some of that before I had posted the first time.

Let's try this post again.

And yet there are many magnesium alloys with ignition temperature above their melting point and above the boiling point of pure magnesium. Which isn't relevant when you have fires with temperatures hotter than these temperatures. A warship would have (or have inflicted on it) a variety of means to achieve these elevated temperatures. I don't see here direct discussion of the actual concern, the high reactivity of magnesium. I get that the original poster was being bombastic, but I still don't buy that magnesium alloys are as stable in hot fires as you imply. And that is without getting into the fire retardant nature of metal foams that use ceramic beads in the cells. Which is where most criticism of idontgno started. I already had read some of that before I had posted the first time.

Which isn't relevant when you have fires with temperatures hotter than these temperatures. A warship would have (or have inflicted on it) a variety of means to achieve these elevated temperatures. I don't see here direct discussion of the actual concern, the high reactivity of magnesium.

I get that the original poster was being bombastic, but I still don't buy that magnesium alloys are as stable in hot fires as you imply. It's worth noting in particular that warships have, and have inflicted on them, a variety of means for achieving temperatures hotter than what you mention.

Which is where most criticism of idontgno started. I already had read some of that before I had posted the first time.

Sorry, it's not that big a deal though they may well lose their commercial contract with NASA which would be a significant setback.

Water is not an alloy of hydrogen. Similarly, a magnesium containing oxide is not an alloy of magnesium. As I noted before, magnesium alloy implies a large portion of elemental magnesium. And oxygen will be present because this ship will be used on Earth in an oxygen rich atmosphere.

Some public schools are in that category. And some public schools are in the category of only having a chemistry class because the teacher donated equipment.

What's more important? A little more protein in the diet or educating the next generation of scientists? See? It's more good.

But if they are calling it a magnesium alloy, then elemental magnesium is a principle component and flammability is an issue.

I don't see that SpaceX is trying to build a Vostochny-scale complex. Nor do they need one at present.

Construction is not the actual beginning of a construction project.