Recent comments in /f/explainlikeimfive

SurprisedPotato t1_jaan7z1 wrote

I'll think about this. I will note that the Lorentz transformation equations as given in the introduction to this wikipedia page look like they'd work fine, giving non-null answers, in the case v=c. They imply that in the photon frame, only t' = 0 is possible, but that's what you'd expect of a particle not traveling through time. The equations don't say "t' does not exist".

Maybe you've seen a formulation where something is divided by gamma = sqrt(1 - v^2 / c^2 ). Then, certainly, such a formulation might say "such and such a quantity does not exist when v=c". I would suggest that that's a limitation of the formulation, not necessarily a reflection of reality.

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Rhwyo t1_jaamktl wrote

It's not just a couple of comments, it's been going on for years. She published a huge rant about trans people on her website. She has taken part in numerous events run by anti-trans campaign groups, and has repeatedly endorsed others, in some cases confirming that she has given money to them. She accidentally copied and pasted some text from an extreme anti-trans blog post (that she had presumably been reading) into the middle of a tweet aimed at a child. She then lied about this situation and claimed that trans people were angry at her just because she praised a child's drawing. She gets incredibly defensive and angry at anyone who disagrees with her. For example, Graham Norton was asked about her, and he very politely said that he thought the media should talk to trans people and medical experts instead of celebrities - she responded by accusing him of supporting rape threats and death threats (this is a common theme - she has received some rape threats and death threats, and therefore anyone who disagrees with her is essentially a rapist murderer).

On top of all of that, people have pointed to several questionable depictions of trans people (or characters who seem like they might be trans) in her novels. In one of her detective novels, the hero threatens to get a trans woman locked up in a men's prison, where he suggests that she will probably be raped. Some of the others are more of a stretch - there is a minor villain in Harry Potter who is a woman who seems to have very masculine traits. Some people think that one is a coincidence, but some people think the character lines up perfectly with how she views trans people.

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jensjoy t1_jaamhe5 wrote

>then multiple that by 4 which equates $40 per month

You've got a wrong premise, leading to the difference you noticed. Apart from February, four weeks (28 days) do not equal one month (30/31 days).

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left_lane_camper t1_jaamcrt wrote

It's a subtle difference and one we should be careful to distinguish: the lack of a valid reference frame for the photon means that it does not make sense to talk about the passage of time from the photon's perspective. Without such a reference frame, something moving at c (such as the postulated massless neutrino) cannot change, which would also be true if the elapsed time was 0, though that is not the case here.

But lacking a valid reference frame is not the same as saying the elapsed time (or distance) for a massless particle between its creation and some later time (from our perspective) is zero. Talking about elapsed time at all for a massless particle from its perspective doesn't make sense. If you are familiar with coding, it's vaguely analogous to the difference between a value being 0 (a real number that can be found on the number line) and NULL (a value that is not a number at all).

Saying "time does not pass" is kind of ambiguous and I wouldn't describe it as wrong per se, though without clarification it might lead someone to think that it means that "the amount of time is 0" rather than "it does not make sense to ask how much time has passed, as the photon lacks a valid reference frame in which time could pass in".

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a4mula t1_jaaloxu wrote

No problem. Just keep in mind, and through no action on my part, I'm nobody. These type threads tend to get shut down pretty quickly because it's a forum in which we should promote objective answers that can be validated by all.

This is one in which there is no singular objective answer because it's too broad a question.

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TheBananaKing t1_jaaljwi wrote

I strongly recomend you watch Contrapoints on the topic - she goes into a wealth of detail.

When the fuss first blew up a few years back, I assumed it was just your standard thoughtlessly-insensitive old person with outdated ideas but no particular malice.

I was wrong. Holy hell.

JK doubled down again and again and again on her hatred for trans people, to a jaw-dropping degree. She is raving batshit insane on the topic.

And once you've watched through that, check out the Shaun video on her ethics and political stance. Again, it goes into detail, and it's not pretty.

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Mp32pingi25 t1_jaaky06 wrote

You don’t need to take vitamins when you’re sick. That is just a myth started with some of those homeopathic medicines and the “emergenC” stuff. They are just vitamins and your body can only use so much and the extra will just come out in your pee. So if you are deficient in something then vitamins might help. But getting from food is by far the best

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Rhwyo t1_jaakvq6 wrote

> JK Rowling has said some statements regarding trans people that some people consider disparaging.

She's been loudly campaigning against trans people for years. She has repeatedly said very overtly disparaging stuff about them or anyone who defends them, and has openly given money to anti-trans groups. Not to mention that there are several unpleasant depictions of trans people in her novels; for example, in one of her detective novels, the hero threatens to have a trans woman sent to a men's prison if she doesn't cooperate, and jokes about how the other inmates would probably rape her.

> Thats it. Thats all.

Are you being deliberately dishonest or do you literally just not know anything about the situation?

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