lessdazed comments on Stanislav Petrov Day - Less Wrong

35 Post author: gwern 26 September 2011 02:49PM

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Comment author: TobyBartels 28 September 2011 08:31:51PM *  1 point [-]

I don't know what it means for something to be good for an environment in the absence of people living in that environment.

Why ever not? It means the same thing as it does when humans are there. Good for the environment isn't conventionally defined purely by what is seen by the local humans.

It isn't??? An environment is something that surrounds something else. Many environmentalists are so precisely for the benefits that a good environment gives to humans, although others also care about other animals (and even plants, although I don't really know what it means for something to be good for plants in themselves other than just helping them to grow). I'm not trying to be cute here, I really don't understand what you mean!

Perhaps you mean that wild animals (say mammals) would be better off.

No. I mean the environment.

That links helps a bit; it suggests that you mean that nature would be better off without humans, which is along the lines of what I was thinking. (I focussed on mammals simply because it's most clear to me what it means for something to be good for them in themselves.) However, it doesn't really explain how we know what's good for the natural environment. Please tell me what you mean!

Possibly you mean these items in bullet points. In my opinion, these things are good only because they are good for humans or (at least some) other animals. Obviously, your values may differ. If you mean, for example, that high biodiversity is good in its own right (or at least good for some reason not dependent on humans), then that's fine; please confirm or say instead what you do mean.

Comment author: lessdazed 28 September 2011 09:02:25PM *  3 points [-]

Many environmentalists are so precisely for the benefits that a good environment gives to humans

In my experience this tends to be a fake justification, though it is sometimes true.

Comment author: dlthomas 28 September 2011 09:37:41PM 1 point [-]

I'm an environmentalist because I don't want mercury poisoning from my sushi...

Comment author: JoshuaZ 28 September 2011 09:40:11PM *  7 points [-]

Assuming minimal to no regulation what do you estimate would be the probability of getting mercury poisoning from your sushi?

Comment author: PhilGoetz 28 September 2011 10:35:13PM *  6 points [-]

The probability that there is many times more mercury in your sushi than there would have been 100 years ago, is 1.0 unless that sushi came from a fish farm. Whether it's enough to call it "poisoning" is open to debate. The EPA and FDA recommend you do not eat swordfish, shark, or king mackerel, ever, because of mercury.

We've already seen minimal to no regulation, in the 1970s. WRT mercury contamination of freshwater fish it was very bad. Perhaps some of you are too young to remember when American scientists used to debate whether the recommendation to eat fish no more than once a week was conservative enough or not. Fishermen in many areas are still advised not to each the fish they catch.

It's a bit of a moot point, since without regulation, the major freshwater and saltwater fish stocks would have crashed by now anyway. This doesn't always have to be government regulation. Maine lobstermen have regulated themselves for many years - not just outside the government, but illegally (because the punishments they imposed on violators were illegal).

Harvesting of freshwater fish in the US is, so I hear, switching over to fish farming. Not so much because of poison, but because there just aren't enough wild fish.

Comment author: JoshuaZ 29 September 2011 02:16:06AM 0 points [-]

Upvoted. This makes dlthomas's statement seem very reasonable.