Comment author: Lumifer 07 January 2015 07:35:33PM 1 point [-]

I haven't looked at the empirical evidence because I didn't think it would be as convincing as the 2 theoretical arguments

Heh. It seems we have pronounced... methodological differences :-D

Comment author: AlexSchell 07 January 2015 08:01:54PM 3 points [-]

Empirically, some industries are approximately constant-cost, others are increasing- and decreasing-cost. OP mentioned certain factors pushing one way or the other, but ultimately the slope of the long-run supply curve of an industry is determined by which factors predominate, so we'd have to measure it to be sure. What is generally true, however, is that long-run supply is typically highly elastic, so cost doesn't change much from marginal changes in demand.

Comment author: mwengler 06 January 2015 08:40:30PM 1 point [-]

I'm arguing that the super-long term supply curve is virtually flat (the price elasticity of supply is arbitrarily high).

Yes you are. And I think this is wrong. And here is why (stated differently from my original reply which also thought it was wrong).

Consider a world in which the entire demand for chickens is one guy who lives on the island of Kauai. In Kauai, chickens run wild through the streets and yards and fields. Since there is this one guy who buys a chicken every week, the shopkeeper scoops up a chicken in his yard on his way to work whenever he knows his chicken customer is coming. Cost of production, close to zero.

Consider an alternative world in which everybody is eating a chicken every day. The chicken producers certainly buy up lots of land in low cost places where it is cheap to build chicken production. This doesn't fill the need, i.e. price is way above the marginal cost to produce the last chicken. So they build chicken production closer to centers of demand, where real estate and labor are more expensive. This doesn't meet demand, i.e. price is still higher than the marginal cost to produce the most expensive chicken. Finally, someone builds 10 level chicken coops with HVAC systems, water desalinators to provide drinking water to the chickens, and pays a fortune to process the chicken poop into a benign fertilizer product which they essentially have to give away in order to keep it from stacking up around their chicken coops. Finally demand is met.

The point is, demand is filled by suppliers that pay different costs to create the chickens they sell. The cheapest producer makes the most profit, he is lucky. The most expensive producer makes just enough profit to keep producing, the slightest drop in price will put him out of business.

Even within a given production facility, the marginal cost to produce an extra chicken rises as the "capacity" of the production facility is filled. So for the christmas rush, 10% more chickens are grown, but it raises the costs of the facility 15% because they are paying night-workers instead of day workers, they are having to build dormitories to house their extra workers, they need a higher quality of automation in order to get 10 chickens per cubic foot instead of 8 chickens per cubic foot which their cheaper robots manage, etc.

So in a world where everybody wants chickens a lot, people will spend more to consume chickens because they will spend more to produce chickens, because the cheapest production sites and methods will be saturated before the market is.

Comment author: AlexSchell 06 January 2015 11:11:52PM *  1 point [-]

Looking at the extremes doesn't tell you that chicken production is an increasing-cost industry at the margin. Sure input costs are important (the OP agrees - see last section), but there are also economies of scale, R&D investment, and so on pushing the other way, so it's ultimately an empirical matter whether chicken production is increasing- or decreasing-cost at current levels of production (again I'm just repeating what the OP says).

IMO this issue is actually less relevant than the OP seems to think, because we're only talking about very small marginal changes to chicken demand, and there's no way the long-run supply curve is steep enough for that to matter. But one could try to estimate the long-run supply curve at least "locally", which might settle this issue.

Comment author: Epictetus 06 January 2015 04:19:31AM 0 points [-]

On average I would expect that if my chicken consumption goes down by 1/year, the production of chickens for eating will go down by about 1/year, for the sorts of reasons that erratim gives.

My issue is that there's a fair amount of waste built in. The chicken you don't buy is probably just going straight to the rubbish heap. A large supermarket is already throwing away hundreds of pounds of meat each year. For example, British chain Tesco said that in the first six months of 2012, some 28,500 metric tons of their food was wasted. With just under 6,800 stores, that's over 8 metric tons per store, per year.

To get the retailer to buy less chicken, you'd have to cut consumption enough to exceed their threshold for allowable waste.

I think that "practically zero" means "practically zero as a fraction of the whole, which is true but not directly relevant. (In the same way, donating to a charity that feeds starving people has "practically zero" effect on the problem of starvation, curing someone of cancer has "practically zero" effect on the problem of cancer, etc.)

I meant in absolute terms. If you donate to a charity, that money's going to help someone. Curing someone of cancer drops the cancer population by one. With chickens, there's the aforementioned waste problem where you may have to meet certain thresholds before you see any change.

Comment author: AlexSchell 06 January 2015 07:11:54AM 3 points [-]

To get the retailer to buy less chicken, you'd have to cut consumption enough to exceed their threshold for allowable waste.

This strikes me as compatible with what gjm said in the sentence before the one you quoted. Some chicken-buying decisions will make no difference, and others are going to have a disproportionate effect by hitting some threshold. In aggregate, chicken purchases by a supermarket have to equal their chicken sales (plus inventory breakage), so a pretty good guess for the expected impact of buying one less chicken is that one less chicken is going to be produced. Richard Chappell discusses a very simple model here. I haven't seen believable models where in the long run there is substantial deviation from one-for-one.

Comment author: gwillen 03 January 2015 10:44:42PM 1 point [-]

This is quite interesting. I strongly suspect there are already software packages aimed at nonprogrammers that can do things much like this, but I don't know anything about the field. Anybody know anything like this?

Comment author: AlexSchell 05 January 2015 11:50:29PM *  0 points [-]

Hubbard recommends a few commercial Monte Carlo tools for risk analysis that seem very related: Oracle Crystal Ball, @Risk, XLSim, Risk Solver Engine, Analytica.

Comment author: AlexSchell 05 January 2015 10:31:21PM *  1 point [-]

Neat write-up. I'd say that the scale elasticity of Cost is also irrelevant, since vegetarianism promotion only has a small marginal effect on scale.

Comment author: sixes_and_sevens 05 January 2015 01:54:42PM 8 points [-]

This is probably like walking into a crack den and asking the patrons how they deal with impulse control, but...

How do you tame your reading lists? Last year I bought more than twice as many books as I read, so I've put a moratorium on buying new books for the first six months of 2015 while I deplete the pile. Do any of you have some sort of rational scheme, incentive structure or social mechanism that mediates your reading or assists in selecting what to read next?

Comment author: AlexSchell 05 January 2015 03:19:08PM 3 points [-]

This was more of a side effect of deciding to pare down on my possessions than an intervention specifically aimed at buying fewer books, but I rarely buy books anymore just because I want to read them. I get books on LibGen or at the university library. In the rare event in which a book turns out to be a really valuable reference I may then buy it.

Comment author: Capla 04 January 2015 09:33:29PM -1 points [-]

Thanks. Anywhere else where I can get relevant information?

Comment author: AlexSchell 05 January 2015 03:04:56PM 0 points [-]

I found the links by googling "green card marriage".

Comment author: Capla 04 January 2015 09:07:32PM -1 points [-]

Time: sure.

Reputation: Actually, I think going above and beyond for a stranger in need is pretty strong signalling of my Altruism, especially among the communities I walk through.

Legal risk: This is what I want to hear about. What legal risks?

I'm assuming you're asking about a sham marriage that you're going to end later.

Maybe, but I don't see any particular reason to get a divorce except 1) the refugee in question wants to marry someone else or 2) so I can go marry another refugee.

Comment author: AlexSchell 04 January 2015 09:29:46PM *  1 point [-]

It looks like marrying specifically for US residency purposes is illegal. This report gives the impression that only a tiny fraction of people actually get prosecuted. You'll have to convincingly lie to a consul and likely undergo some investigation (see e.g. here).

Comment author: Capla 04 January 2015 08:41:35PM -1 points [-]

Why? What's a marriage cost?

Comment author: AlexSchell 04 January 2015 08:57:21PM 0 points [-]

Time, legal risk, reputation. The opportunity cost is lower if you were going to marry a random/non-specific person anyway, but I'm assuming you're asking about a sham marriage that you're going to end later.

Comment author: Soenke 04 January 2015 07:10:52AM 5 points [-]

I have the following questions regarding the simulation argument:

Unless I’m missing something, it is always (?) talked about “ancestor” simulations. So, my questions are:

Why does it have to be an “ancestor” simulation?

Couldn’t it be also considered that there are civilizations that run simulations of civilizations that were never “real”?

I.e. couldn’t we be a simulated civilization that was never an ancestor to the civilization that is simulating us?

And sub-questions would be:

So, maybe consciousness is unique in our simulation, i.e. those who simulate us don’t have consciousness?

So, maybe death is unique/special in our simulation, i.e. those who simulate us don’t die?

Thanks very much in advance.

Comment author: AlexSchell 04 January 2015 04:37:52PM *  3 points [-]

I forget the details, but I think the argument intentionally focuses on ancestor simulations for epistemic reasons, to preserve a similarity between the simulating and simulated universes. If you don't assume that the basement-level universe is quite similar to our own, it's hard to reason about its computational resources. It's also hard to tell in what proportion a totally different civilization would simulate human civilizations, hence the focus on ancestor simulations. I'm not sure if this is a conservative assumption (giving some sort of lower bound) or just done for tractability.

ETA: See FAQs #4 and #11 here.

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