Live data from Hacker News

Super Heavy has splashed down in The Gulf of Mexico

twitter.com

861–870 of 899 posts

Re: Super Heavy has splashed down in The Gulf of Mexico

#861

Earlier quoted context omitted.

I mean of course Mars colonization is crazy. Being skeptical is reasonable, even Musk himself is skeptical and gives it a low chance of success. But we know for sure we will not get there if we don't try. That the ship in principle is capable of landing on Mars doesn't seem that crazy. They are designing with that in mind from the beginning. Again, that's difficult but very possible with current technology. The more…

Musk held an event earlier this year where he outlined how SpaceX was going to get 1 million people to Mars by the 2050’s. That’s not really being skeptical. The plan he outlined is so ambitious that it is entirely unrealistic to the point of being almost straight fantasy. The number of Starships needing to be built, the amount of launches necessary to send that many people, and other details don’t line up. I am not…

Yes how outlined how it it was possible. He is still sceptical and believes it has a low chance of success. And he knows that if it happens it will most likely take longer.

But the point that matters here is that even if only 0.00001% of this goal is achieved, its fantastic.

So when we evaluate their plan we should evaluate it as 100% success or failure. We should evaluate the chance that they are 0.00001% successful.

And we can still be sceptical of that 0.00001%. Since doing that is hard as fuck and will need not just SpaceX but many others as well.

But what SpaceX is doing, is for the first time making it possible to seriously consider that 0.00001%.

Re: Super Heavy has splashed down in The Gulf of Mexico

#862
post #854

Earlier quoted context omitted.

> And there are others that I missed For instance, the Franco-Prussian war of 1870, where the German Empire you seem to idolize was effectively born. Also the same war that gave the German Empire a degree of overconfidence about their chances against France. > however had Britain remained neutral and not created alliances that it knew would put it in conflict with Germany is it possible that the Germany vs. Russia co…

> Did Britain create the alliance between France and Russia? Britain did not create the alliance between France and Russia - that alliance was formed independently in 1894 as a counterweight to the Triple Alliance of Germany, Austria-Hungary and Italy. Britain's casus belli for entering WWI in 1914 was Germany's violation of Belgian neutrality, not any direct alliance obligations. However, I would argue that Britain'…

> Britain did not create the alliance between France and Russia - that alliance was formed independently in 1894 as a counterweight to the Triple Alliance of Germany, Austria-Hungary and Italy. Britain's casus belli for entering WWI in 1914 was Germany's violation of Belgian neutrality, not any direct alliance obligations.

And the idea of maintaining a balance of power in the first place was part of the legacy of the Congress of Vienna following the Napoleonic Wars. It wasn't a uniquely British policy.

> However, I would argue that Britain's shift away from "splendid isolation" and toward the Entente with France and Russia in the early 1900s, while stopping short of hard alliance commitments, still had the effect of emboldening France and Russia in their disputes with Germany and Austria-Hungary. The Anglo-Russian Convention of 1907 in particular eased long-standing tensions between Britain and Russia.

> So in that sense, while Britain didn't create the Franco-Russian alliance, British diplomatic moves in the pre-war years did strengthen the Entente bloc and alter the balance of power in a way that made France and Russia less likely to back down in a crisis. A more fervently neutral Britain may have left France and Russia feeling less confident.

Germany's goal in 1914 was to attack Russia, so Russia's confidence is of little relevance. Do you have any evidence that France was more confident in allying with Russia because they felt they could trust Britain to help? Because that doesn't seem at all consistent with the history of Franco-British relations. And, as discussed above, it's also perfectly explainable in terms of maintaining the balance of power, which had been the consensus method of maintaining peace for the past century.

> I disagree with your characterization that I "idolize" the German Empire.

You're furthering a theory in which Britain is somehow to blame for the outbreak of the First World War. I assumed that your attempt to rehabilitate the historical legacy of the German Empire was motivated by some sort of fondness for the German Empire. If I'm mistaken, please accept my apologies.

> My argument is that the outbreak of World War I was primarily caused by the "Thucydides Trap" dynamic - the dangerous instability that occurs when a rising power threatens to displace an established power.

Yes, this was exactly the dynamic taking place between Germany and Russia.

> In this case, Germany's rise in the late 19th/early 20th century threatened the European balance of power that had long been anchored by British dominance.

There are multiple problems with this idea, most of which I have already enumerated, but I will re-enumerate them for your convenience:

* Britain and Germany operated in very different spheres. Britain was a global thalassocracy while Germany was a land power with mostly Eurasian concerns. Germany was attempting to develop sea power on their own, but they were never particularly close to eclipsing Britain on that front.

* Even if Britain had the goal of engineering the outbreak of a war with Germany, they did very little that contributed to the outbreak of such a war. Meanwhile, Germany took several such actions.

> I don't believe in the simplistic "evil Germans started WWI" narrative that was promoted by the war's victors. This narrative served to justify the punitive terms of the Treaty of Versailles placed on Germany, which most historians agree was a key factor in the rise of Nazism and the eventual outbreak of World War II 20 years later.

That's a non-sequitur; even if the Treaty of Versailles was too punitive, it doesn't follow that Germany didn't start the war.

(For what it's worth, the most punitive effects of the Versailles Treaty had been effectively waived or ameliorated long before the Nazis took power. The consequences of the Versailles Treaty did motivate support for the Nazis in the 1920's, but by the end of the 1920's, hyperinflation was over and Germany had successfully renegotiated itself into a much stronger economic position. What really helped the Nazis after that point was the start of the Great Depression. But this is a tangent.)

> Portraying it simplistically as "evil Germans" against the noble Allies is not productive and does not do justice to the immense tragedy of the war and its aftermath.

Some simplistic historical narratives also turn out to be mostly true. For example, would you make the same claim about the Second World War that you're making about the First?

I'm not particularly interested in moralizing about history. But here are the concrete actions Germany took which served to either start or expand the war:

* Germany gave diplomatic encouragement to Austria-Hungary to declare war on Serbia in the first place.

* When Russia joined the war in defense of Serbia, Germany responded by declaring war on Russia, knowing that Russia and France had a defensive alliance.

* When France joined the war in defense of Russia, Germany attacked the neutral country of Belgium.

Britain could have stayed neutral at this point, and yet a world war would have still broken out purely by virtue of Germany's actions. Let's contrast the actions the British took, which you attribute the outbreak of the war to:

* Britain eased tensions with Russia and improved relations with France. (Very strange to start a war by improving relations with your traditional enemies!)

* After Germany was already in a war with Russia, France, and Belgium, Britain entered the war and refused German demands to remain neutral.

My objection with your theory here is that you haven't provided any credible mechanism by which Britain could have possibly engineered the start of an Anglo-German war, particularly when the causal links in that chain included many actions that were entirely within Germany's control. Can you please address that particular objection? You can say "Thucydides Trap" until you're blue in the face but the facts don't fit the theory in this instance.

Re: Super Heavy has splashed down in The Gulf of Mexico

#864

Earlier quoted context omitted.

It's also worth noting part of the craft flew (intentionally) without heat tiles, and another part with thinner tiles. They're gathering a ton of data to make it robust! Many of these engineers built Falcon 9, and I have a pretty high degree of confidence they'll shake out the issues. SpaceX operates very differently from traditional aerospace, so we'll likely see many more issues come up before Starship is human rat…

Getting it human rated is likely much harder than reusing the upper stage a couple of times. The difficulty is that Starship has 1) no launch abort system, and 2) the belly flop landing is much more dangerous than conventional and proven capsule based landing. To get the system human rated, they may have to fly tens or even hundreds of flawless cargo missions first.

The Shuttle was human rated (though in retrospect, perhaps wrongly) despite having basically both of those exact same flaws.

Re: Super Heavy has splashed down in The Gulf of Mexico

#865

Earlier quoted context omitted.

It was an ancestor of things with military value, but it had little to none itself. You need a guidance system for a useful cruise missile, and the V1 had essentially none. No points for "military utility" as a "research program" when you're actively launching them at civilians; whatever it is, that's not a research usage anymore.

The German strategy was to pressure the British civilians into pressuring their government for an end to hostilities against Germany. They were demoralizing the British, and to that end the weapon was actually effective though the government did not capitulate. Additionally, reports of damage to the British capital city was very morale-raising for the Germans who saw mostly the destruction of their own cities. That a…

> though the government did not capitulate.

Weirdly, that's how it almost always works out. Didn't work in England, didn't work in Germany, not working in Ukraine. Kinda makes that "though" look silly in retrospect. That's why today we consider bombing civilians to have no military utility.

Re: Super Heavy has splashed down in The Gulf of Mexico

#866

Earlier quoted context omitted.

You hit on two really different topics at the same time. So let's hit on the fuel topic first. People tend to draw intuitive parallels of rocket fuel with gas. A short trip doesn't need much, while a long trip needs a lot. But it turns out that's not really how it works in space. In space the way you travel is you point at something, accelerate a bunch, and then coast there. So the typical measurement for something a…

Why does this matter? The delta V requirements are so steep Starship can't return from the martian surface. It is a completely different game to go to Mars than to the moon unless you are planning on building a mars gateway in orbit and never landing anywhere.

Earth to Moon Surface ∆V: 9.4+2.44+0.68+0.14+0.68+1.73 = 15.1 km/s

Return from Moon Surface to Earth ∆V: 2.44+0.68+0.14+0.68+1.73 = 5.7 km/s

Earth to Mars Surface ∆V: 9.4+2.44+0.68+0.09+0.39+0.67+.034+0.40+0.70+3.8 = 18.6 km/s

Return from Mars Surface to Earth ∆V: 2.44+0.68+0.09+0.39+0.67+.034+0.40+0.70+3.8 = 9.2 km/s

Yes, it's more, but it's really not _that_ big of an engineering stretch.

Re: Super Heavy has splashed down in The Gulf of Mexico

#867

Earlier quoted context omitted.

Incredible demo of great service. If you can get reliable video from space, it makes wifi on a commercial plane look like cakewalk. What will viasat stockholders think now?

As long as they stay sane and reliable they will have nothing to worry about. Internet connectivity is too important to rely on service that can be taken away without notice by one irrational angry tweet or xhit or whatever they’re called now.

It was provided that way in the first place. Whims that provide can take away.

So pay for your services in full and don't leak negotiation documents.

Re: Super Heavy has splashed down in The Gulf of Mexico

#868

Earlier quoted context omitted.

WW2 became a world war when Britain and France declared war on Germany. Of course, they could have stood back and let the Nazi's carry out their plan of annexing Eastern Europe, but they drew the line at Poland.

No, that’s when WW2 became a pan-European war. It became a world war when Japan attacked the British and Americans, thus combining the Anglo-German and Sino-Japanese wars into a single conflict.

It's arguable, WW2 is typically dated from the German invasion of Poland. By then, the war in Asia was already underway with the Japanese fighting in Asia. So with the British Empire, Germans and French and the Soviet Union also starting hostilities, much of the world was at war.

Re: Super Heavy has splashed down in The Gulf of Mexico

#869

Earlier quoted context omitted.

WW2 became a world war when Britain and France declared war on Germany. Of course, they could have stood back and let the Nazi's carry out their plan of annexing Eastern Europe, but they drew the line at Poland.

Does anyone seriously think that the Nazis would have stopped at Eastern Europe?

It's what Hitler was saying he wanted, Lebensraum for a new German empire by conquering the "inferior" people of Eastern Europe. Western Europe probably didn't expect to be invaded, and who knows what kind of alternative history would have taken place if Britain and France hadn't got involved. Perhaps the Nazi's would never have been satisfied unless they were at war somewhere, or perhaps they would have had their hands full in the east. Nato countries today probably assume that Russia invading Ukraine isn't a prelude for Russia attacking Nato countries.

Re: Super Heavy has splashed down in The Gulf of Mexico

#870

Earlier quoted context omitted.

And now US fears China instead. You can't come out on top. Why not commit less atrocities on the way wherever you are going?

"Commit less atrocities" in this case is just code for permitting others to commit whatever atrocities they want. American "atrocities" against Japan pale I comparison to what the Japanese were inflicting on the rest of Asia.

It's not a code. It's literally saying leave doing bad things to bad guys. Instead just becoming one of them but being proud about it because your atrocities were somehow better because the cause justifies the means and your cause is just. By that logic jihad is fine.

Have you noticed how in history good guys always eventually won every major conflict? What are the odds? 100% if you paint a bullseye after you shot.

Post reply on HN