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Comment: Re:So doe sthis mean I can... (Score 1) 1077

I haven't seen any bigotry in these comments, and I think it's disingenuous for you to say so.

Arguing that we should have the right not to do business with groups we dislike, which was precisely the excuse given in the 60's by people who didn't blacks in their restaurant, is not-so-thinly veiled bigotry. It's painful listening to those who don't know history trying to repeat it, desperately hoping that this time it will be different and they'll be allowed to show "those people" who's in charge.

For the record, I'm not black, gay, or liberal. But things like this are exactly the reason why I'm no longer a Republican. I just can't go along willingly with the Attempt Of The Week to make this a hyperconservative theocracy. When someone inevitably comes along and wants to deny my right to fully participate in society, I hope we'll have built the momentum to shut it down.

Comment: Re:It is (Score 1) 123

by Rei (#49378241) Attached to: SpaceX's New Combustion Technologies

Wow, this is great to hear - I'd never heard of you guys before. :)

And looking at your site, I like what you're doing even more - direct 3d printed aerospikes? Pretty darn cool. What sort of 3d printing tech are you using? Have you looked into the new hybrid laser spraying / CNC system that's out there (I forget the manufacturer)? The use of high velocity dust as source material gives you almost limitless material flexibility and improved physical properties that you can't get out of plain laser sintering, and the combination with CNC yields fast total part turnaround times.

And you're working on turbopump alternatives? Geez, you're playing with all of my favorite things here.... ;)

What sort of launch are you all looking at - is this ground launched (and if so, do you have a near-equatorial site) or air launched? I'd love to see more details about your rockets, what sort of ISP figures you're getting so far, how you're manufacturing your tanks, and on and on. But I guess I'll have to wait just like everyone else ;)

I wish you lots of success! And even if you don't make it, at the very least you'll have added a ton of practical research to the world :)

Comment: Re:Wrong Focus (Score 1) 123

by Rei (#49378083) Attached to: SpaceX's New Combustion Technologies

Note that it's technically possible to have something like this with a slow reactor; you could for example use steam as a moderator, which will transmit a reasonable proportion of near infrared through it (the hotter you can run your fuel particles, the better transmission you'll get). But not only will you lose some light, but just the simple act of neutron moderation is a very heat-intensive process, meaning big radiators if you want big power (not to mention that the moderator itself for such a slow reactor is also far heavier than the core). The whole point of my variant is to avoid the moderator and avoid the ship having to ever capture anything but incident heat lost due to generation, transmission, reflection, etc losses.

One possibility for a slow reactor, albeit only directly applicable to the rocket mode above, is to have your propellant be your moderator, absorbing both IR and moderating fast neutrons. The fact that it's heating then becomes irrelevant (actually an advantage), since you're dumping it out the nozzle for thrust. If one wanted mission flexibility in such a scenario you could have such a moderator-ejecting rocket mode used to get to orbit, and then switch to retaining the moderator once in orbit and cooling it instead in order to make use of the fission fragment operating mode.

But a fast reactor would obviously be highly preferable so you don't have to worry about a moderator at all. :) I'm just pointing the above out because slow reactor versions have already been simulated.

Comment: Re:Wrong Focus (Score 1) 123

by Rei (#49378039) Attached to: SpaceX's New Combustion Technologies

Wait a minute, no, I entered it right into the calculator the first time around. Argh, this interface is confusing. Radiative equilibrium for Tunsten at its melting point 3300C according to the calculator is 92MW/m. A "cool" 1200C radiative temperature according to the calculator 2,6MW/m. According to the calculator, 10kW/m is about 380C.

Comment: Re:"principles our nation was founded on" (Score 1) 1077

Then you think that no law should be based on religious belief; when in fact all law is.

I cannot keep up with the contortion of intellectual dishonesty required to type that sentence with a straight face. I don't think you're lying to me and that you really believe this, but I equally believe that you're lying to yourself. Have a nice day and best of luck in your future endeavors.

Comment: Re:"principles our nation was founded on" (Score 1) 1077

"Separation of church and state", as a specific quote or concept, is nowhere in the founding legal documents of the United States.

It was no less than Thomas Jefferson who said:

Believing with you that religion is a matter which lies solely between Man & his God, that he owes account to none other for his faith or his worship, that the legitimate powers of government reach actions only, & not opinions, I contemplate with sovereign reverence that act of the whole American people which declared that their legislature should 'make no law respecting an establishment of religion, or prohibiting the free exercise thereof,' thus building a wall of separation between Church and State.

Next, your strawman:

It's use did not create prohibition against religious expression.

Correct. Still doesn't. You're legally entitled to say "blacks are of the devil" (or whites for that matter). Go ahead! No government agency will stop you. However, you're not allowed to discriminate based on race, color, religion or national origin in hotels, motels, restaurants, theaters, and all other public accommodations engaged in interstate commerce (court-upheld interpretation: pretty much anywhere).

No one believes that any of our rights are unlimited. You can speak your opinion, but you can't yell fire in a theater. You can bear arms, but don't expect to own a nuclear bomb. You can sincerely believe that whites are a superior species to blacks, but you don't get to own, kill, intimidate, lynch, or otherwise harm a black guy, regardless of your vile beliefs. This isn't something I'm making up out of whole cloth, but well-established and widely accepted interpretation of Federal law.

Documents which govern the FEDERAL government do not necessarily apply to State or Local governments.

Read your Constitution, son. The 14th amendment says:

Section 1. All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside. No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws.

This codified previous Constitutional supremacy thoughts by explicitly stating that States don't get to write laws violating the Constitution or selectively affording privileges to one group and not another.

Comment: Re:Wrong Focus (Score 1) 123

by Rei (#49375327) Attached to: SpaceX's New Combustion Technologies

The cornerstone of it is the dusty fission fragment rocket, so I'd start there. Another key aspect is the use of a accelerator-driven subcritical fast reactor rather than a critical slow reactor. Lastly it's a variant of a nuclear lightbulb, albeit (as mentioned) without the primary drawbacks of them (containment and radiation blackening of the chamber blocking the light). This latter aspect is due to the spectrum changes of fused silica (I can't find a paper on short notice that shows the IR spectrum, but you can see that for most types of fused silica / fused quartz, there's little loss of transmission on the red side of the spectrum; this holds true but is even more pronounced in the IR range).

Comment: Re:"principles our nation was founded on" (Score 1) 1077

Except we've decided as a country that there are certain ways it's not OK to be an asshole, particularly when it's because the other person is black, female, Muslim, etc. I did not advocate for restricting free speech. I'm advocating for what law already says regarding other minority classes: feel free to speak your mind, but you shouldn't get to act against gay people any more than you're allowed to act against black people.

I'm dyed-in-the-wool small-l libertarian (and a registered large-L), but I'm horrified at the idea of passing laws to explicitly protect the "right" to discriminate against minorities. "First they came ..." and all that; we shouldn't be looking for new and creative ways to crap on our neighbors.

Comment: Re:"principles our nation was founded on" (Score 1) 1077

You mean the case where the court ruled very narrowly that atheism should be afforded the same legal respect as religions when ensuring the rights of people holding those opinions? You would be hard pressed to choose a case less helpful to your viewpoint.

Comment: Re:So doe sthis mean I can... (Score 1) 1077

You may be unaware but there are people who live outside of the US

So you're not American and you're unfamiliar with American law, but feel compelled to comment on a case involving one particular American state. Allow me to give you a quick introduction: your opinion is explicitly opposed to American case law. Feel free to speculate as much as you'd care to, but understand that from a US point of view, you are completely wrong.

Comment: Re:"principles our nation was founded on" (Score 1) 1077

No where does it separate the state from being effected by religion.

Are ye daft, son? That's exactly what it says: religion cannot become the basis for law. It is literally impossible for my religion to write laws without prohibiting your free exercise thereof; that's what laws do.

In fact the way the courts have ruled that recognition of any religion by any governmental agent, is a defacto establishment of atheism as a state religion.

IHBT. Sigh. I hope you're trolling anyway, because I'd hate to think that an adult could pack that much accidental ignorance into a single sentence. No courts have ruled that way, and atheism cannot be a religion (any more than my lack of belief in the Tooth Fairy establishes me as an "aTooth-Fairyist").

Here is a law professor agreeing that racist speech is protected speech, i.e. being an asshole to people.

You can say asshole things to people, but there are enumerated acts of assholery that are explicitly illegal. You have the freedom of speech, but the Civil Rights Act of 1964 says it ends at the cash register.

"In matters of principle, stand like a rock; in matters of taste, swim with the current." -- Thomas Jefferson

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