Interesting Links for 16-08-2017

Aug. 16th, 2017 12:00 pm
andrewducker: (Default)
[personal profile] andrewducker

Woe is me

Aug. 15th, 2017 05:14 pm
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[personal profile] james_davis_nicoll
Just noticed the book I was going to read tonight won't be out until November, so I shouldn't review it any time soon.

Pilot Wave Theory

Aug. 15th, 2017 07:45 pm
jack: (Default)
[personal profile] jack
Does anyone understand pilot wave theory even a little bit?

Prodded by several recent articles, I've been trying to follow what it says, and am still quite unsure of the realities.

The analogy usually presented is, if you have a small oil drop on the surface of water, and the water container is subject to a regular pattern of vibration, the water forms standing waves in shapes affected by the edges of the container and any obstructions in the surface of the water. And the oil drop tends to move across the surface of the water following the paths in those waves.

If you look solely at the oil drop, you can't tell which of two equal paths it would follow, but you can predict it will take one of them with equal probability, and predict its motion probabilistically. And if you couldn't see the standing water waves, you could deduce something in that shape exists.

You can even get some analogies for weird quantum behaviour like the an electron passing through two parallel slits and experiencing interference with itself: the water waves form possible channels for the oil drop, and the oil drop goes through one slit or the other, but ends up only at certain places on the far side.

However, the analogy to actual quantum physics is still unclear to me. Not whether it's true, but even what people are suggesting might happen.

Are people suggesting there's some underlying medium like the water? In that case, isn't there some propagation speed? The water waves exist in a steady state once all the obstructions are set up, but they don't respond to changes instantly. If the water trough were miles long, the oil drop would set off following water wave paths that existed at the point it passes through, not the paths corresponding to the obstructions that are going to be in place when the oil drop passes through them.

And yet, as I understand it, no-one expects a propagation delay in quantum experiments. People keep checking it out, but there never is: it always acts like an electron propagates just like it is itself a wave.

I agree, if there WERE some delay, if you changed the slits at this time, and got one result, and changed them at another time, and got another result, that would be massive, massive, evidence of something, possibly of something like pilot wave theory. But AFAIK proponents of pilot wave theory aren't advocating looking for such delays, and don't expect to find any.

Contrariwise, if this is just an analogy, and the quantum equivalent of the water waves (equivalent to the wave function in other interpretations of quantum mechanics) propagates at "infinite" speed, then... that is undetectable, indistinguishable from other interpretations of quantum mechanics. But it raises red-flag philosophical questions about what "infinite speed" means when all the intuition from special (or general) relativity indicates that all physical phenomena are local, and are influenced only by physics of nearby things, and "the same time" is a human illusion like the earth being stationary. Even if you don't expect to detect the pilot wave, can you write down what it should be in a universe where physics is local? Does that in fact provide a way to make QM deterministic and independent of observers, even if you change the reference frame? Because it doesn't sound like it will work.

FWIW, those are very superficial objections, I don't understand what it's saying enough to actually evaluate in depth. But I don't understand why these don't show up on lists of "common objections and rebuttals". Common objections have confident rebuttals in several places, and I've *seen* articles about them, but not understood well enough. Can anyone explain better?

Digression

I do agree, the idea that QM equations are an emergent property of something else, ideally a statistical interpretation of a deterministic underlying reality, would be very nice in clearing up a lot of confusion. But AFAIK, the closest candidate to that is Many Worlds, which doesn't appeal to many people who want to get away from QM unpleasantness.

Interesting Links for 15-08-2017

Aug. 15th, 2017 12:00 pm
siderea: (Default)
[personal profile] siderea
Local clinicians: I just got the mailing for this fall's Harvard Med Psychiatry Dept CE trainings, and at the Dec 1 & 2 session "Treating Couples", kinda buried in the list of presenters are Esther Perel and Terry Real. It's astronomically expensive, like all Harvard Med's stuff, but if you're a sufficiently hardcore fan, there you go. (Some of the other names on this list may also be famous people I don't recognize.)
theferrett: (Meazel)
[personal profile] theferrett

I asked folks what polyamory seminars they’d like me to teach – because I do teach seminars – and got a lot of good suggestions.

Mostly for classes I’m unqualified to teach.

I’m putting this list out here, because I think these are great topics that I’d like to see covered in-depth some day. If these topics are in your wheelhouse, please consider pitching this topic to your local conventions/training sources! And if you do teach them, feel free to leave comments (with dates/locations of your upcoming classes) to spread your wisdom around!

Raising Kids While You’re Polyamorous.
There was an excellent seminar on that at Beyond the Love a couple of years ago, but it was focused on raising kids in a poly commune. Never having raised kids while poly, I’d love to hear more tips and tricks about balancing privacy, childrens’ safety, and potential legal concerns.

Effective Polyamorous Communes.
I’ve seen a lot of poly groups move in together. Most of ’em fell apart shortly thereafter. I’d love to see a discussion of best practices on how to handle finances, romances, etc in a close-contact environment. Bonus if you’re not an extrovert and can tell us introverts how to survive.

Polyamorous Legal Concerns.
Wills and living arrangements and marriages, wow! I’m totally not a lawyer, but this would be a fascinating topic for a professional who’s specialized in these topics.  (I suspect this would only be useful on a state level, but hey.)

Scheduling.
You’d think I’d be good at scheduling, with my many partners, but the truth is that they’re good enough at scheduling to cover for my manifest weaknesses. I’d love to see someone(s) discuss how to schedule time effectively, how to handle conflict in events, how to reserve enough time for each partner who needs it (including you), etc.

Forging Better Bonds With Metamours.
Some of the most stressful situations in poly involve your partner’s partners – and all too often they’re seen as either your BEST FRIENDS EVER or alien beasts you beam communications through a third party to. I’d love to see a class from someone with a long history of effectively communicating with people on the other side of their lovers.

Now, if any of those classes seem like something you could cohere a 50-minute talk on, I’ll note that The Geeky Kink Event is taking applications for November, and though Beyond The Love’s presentation window has just closed, they do have lunchtime pop-up seminars and maybe you might wanna talk to them.

And if you have any questions on teaching, ask me! It’s both simpler and more complex than you think. But not enough qualified people do it.

Cross-posted from Ferrett's Real Blog.

weekend

Aug. 14th, 2017 01:45 pm
hollymath: (Default)
[personal profile] hollymath
I"m settling into a pattern of weeks with very little to do and very low mood, and then being very busy and mostly happier on the weekends. This is really bad for me and no fun but I don't feel able to get myself unstuck yet.

Adventures in Babysitting )

I was staying over so quickly installed myself in the spare room, with the comfy bed, the robot alarm clock and the lamp with colorful airplanes on its shade. It was pretty great.

I was there because next morning Simon and I were driving to Leeds for BiCon and it made no sense to get me home late at night just to go pick me up again the next day.

BiCon )

The Home Office at BiCon )

So I was quite glad that my plans had changed such that I could go to Brighouse that night. I was tired and a little emotionally wrung-out with one thing and another. It didn't help a lot though as after a blessed day off Twitter I was catching up on Charlottesville. I spent way too much time reading what it felt like I couldn't look away from but also couldn't fix. But I was heartened to see a lot of white people talking about how unhelpful attitudes like #ThisIsNotUs were, ignoring that this is what America has always been so we can feel better about ourselves.

Andrew came over to Brighouse too yesterday, for Sunday dinner and terrible films. It was really nice having all the best people around.

Now I'm home where all the cleaning and laundry have been neglected for quite a while even before I was away because my mental health has been so bad. I've done a load of laundry I'm about to go hang up and put another one in. It'd be nice if I could clean some things. And I have to write down volunteering admin and stuff I need to do before it all falls out of my head. Better go and do all of that, then!

Here's hoping this week is better than the last two.

Interesting Links for 14-08-2017

Aug. 14th, 2017 12:00 pm
siderea: (Default)
[personal profile] siderea
Via [personal profile] conuly, Why Medicaid Matters to You, by Prof. Sharona Hoffman, of CWRU. tl;dr: Because Medicaid is not just for poor people, it's how old people (and younger disabled people) pay for nursing homes. So it's for you, too, unless you plan on dying young and healthy.

The article has some interesting stats in it.

(I'm morbidly curious to know where you can score a private nursing home room for only $92k/yr. I presume it's somewhere very rural and far away from here, with terrible care, because by Massachuetts prices that's an incredible bargain.)

A note for next year

Aug. 13th, 2017 10:16 pm
james_davis_nicoll: (Default)
[personal profile] james_davis_nicoll
As near as I can tell from these rules James Nicoll Reviews does not qualify as a fanzine (it provides too much of my income). It might be a semi-prozine (bad for me, because my numbers would not get me onto the long list) or Related (where I also don't think I would made it onto the long list).
andrewducker: (Default)
[personal profile] andrewducker
Instead, I was seen by a doctor last night at the Out of Hours service, who checked with the Eye Pavillion, who told me to come in at 2pm today. So Jane got me there in one piece (crossing roads and navigating festival-goers being tricky when any change of brightness causes intense pain), the doctor checked it was nothing unexpected, and that my iris was not stuck to my cornea (like last time), and then handed me some Maxidex and Cyclopentolate. The former reduces inflammation, the latter stops anything sticking to anything else while it recovers.

It's a pain, because I have to take the Maxidex hourly for the next two days, then 6 times a day for a week, then 4 times a day for a week, then thrice daily for a week, twice daily for a week, once daily for a week, and then I can finally stop. So I've installed an app on my phone to tell me when I should, and am letting that worry about it for me.

Also, the Cyclopentolate seems to cause my eye to focus slightly less well, so for the week I'm using that I suspect I'll have a bit of a headache (as I do now).

But! I am not in as much pain as I was, and my eye is probably not going to explode. So yay!
james_davis_nicoll: (Default)
[personal profile] james_davis_nicoll
There was talk of having a bonfire in October. Was trying to come up with theme/justification because I am incapable of spontaneity. Thought it might be nice to tie it in somehow to the Year of Waterloo Region SF. Wondered "what SF book features bonfires as a central image?"

Perseids Watch 2017: Success!

Aug. 13th, 2017 02:15 pm
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[personal profile] james_davis_nicoll
Many meteors seen, among other things.

Read more... )

Interesting Links for 13-08-2017

Aug. 13th, 2017 12:00 pm

[domesticity] That Damn Lamp

Aug. 13th, 2017 12:00 am
siderea: (Default)
[personal profile] siderea
1) I feel the need to share that the lamp in question, I got from Aunt C – who spent her entire working adult life making lightbulbs for Sylvania. The fact that I can't manage to find adequate working replacement LED bulbs his is either the most ironic or most appropriate thing ever.

2) Okay, I'm now in correspondence with the manufacturer of one of the sets of 5W bulbs that didn't work. They asked about the competitor bulbs that worked, and said they will scare some up to compare with their product. ETA 8/13/17 11:10PM: I have just got a full refund and a thank you note for supplying such detailed information, which is being passed on to the R&D team.

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erratio

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