plazmaphyujin's comments

plazmaphyujin | 6 years ago | on: Hong Kong protests: Authorities to announce face mask ban

This is a total misunderstanding of freedom of speech and the first amendment.

Freedom of speech does not mean you are free to say anything to anyone and never face consequences for your choices. The concept of freedom is to be free from the government officially and legally restricting your right to publicly address your grievances.

China's citizens do not have this freedom. Just because taxi drivers are not afraid to express themselves in the privacy of their cab to other citizens does not mean they wouldn't fear for their livelihood to say the same thing on a stage where it would actually make a difference.

True freedom of speech is this:

In America, anyone can stand in the middle of a public square and shout whatever they want about the government and the police will do nothing. Other people are then allowed to also shout and demonstrate that that person is an idiot, or maybe right, but the government never gets involved.

In China, any demonstration like this is swiftly punished by authorities. On an exchange trip I went on about ~10 years ago an American college student decided it was good idea to shout "Free Tibet!" over and over in the middle of Tiananmen square. An unmarked white van appeared in < 5 minutes and he was gone. He was unharmed but that evening he was on the first flight back to America.

People may hate you and retaliate against you in America for what you say, but they cannot and will never arrest you.

That is freedom of speech.

plazmaphyujin | 6 years ago | on: A physics master’s degree opens doors to myriad careers

I would say yes. Pursue physics only because you love it. Unless you want to go into Defense the job prospects are terrible. However, learning physics teaches you how to learn anything and how to do it fast. This turns out to be an invaluable skill for programming, so physicists make great programmers. You just have to earn it on top of all the physics.

plazmaphyujin | 6 years ago | on: Notre-Dame cathedral: Firefighters tackle blaze in Paris

Yes. Potentially far, far worse. And people have absolutely died from using fire retardant delivered from air tankers.

These planes have to fly extremely close to the ground to deliver their payload (which is spread over an area far too large to be effective in this case anyway btw) and too often the plane can lose control, whether from sudden unweighting or the turbulence from the fire and crash. This can kill everyone on board and usually starts a new fire to boot.

plazmaphyujin | 7 years ago | on: A new Einstein cross is discovered

Well, not really. The distance we can see out is measured in time and we can very nearly see the Big Bang. We can observe the Universe's Recombination event and it is in every direction we look as the Cosmic Microwave Background. This happened everywhere in existence.

If there is an edge to the Universe it is in the fourth dimension when the Universe was a singularity.

plazmaphyujin | 7 years ago | on: A new Einstein cross is discovered

There isn't really an "inside of". There is no other universe that our universe is expanding into. The universe itself just "is", it is made of space-time and that metric is expanding and accelerating. Why it exists is philosophy. Maybe it was made just for us to exist in. Maybe it doesn't give a shit about us and we're simply hydrogen left to own devices long enough to futilely question its own existence.

When we talk about the universe we're rarely talking about what do not know yet, but rather what is possible to know.

Whether there is another universe "outside" of ours is not just something we don't know. It's something we cannot know but it's also something that cannot matter. The observable universe is, by definition, the total encompassment of everything that can possibly ever matter to us in even the strictest mathematical sense.

plazmaphyujin | 7 years ago | on: A new Einstein cross is discovered

There is no edge. It defies the normal way of thinking but every point in the universe is also the center of the universe. The Big Bang happened at every point and space-time is expanding at every point.
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