[pdonis]

> It does not mean we need to "stop doing pretty much everything we're doing". Not sure where you get that idea.

Because your own stated criterion is that we need to be able to justify what we're currently doing based on scientific knowledge. We cannot justify most of the things we're currently doing on that basis.

> The idea is we should live in reality

We apparently don't agree on what "reality" actually is, at least with respect to how much of an emergency CO2 emissions are. You think they're a dire emergency. I think they're not an emergency at all. You will, I take it, claim to justify your belief that they are a dire emergency based on some kind of scientific knowledge. But it isn't. Nobody has a good enough predictive track record about the climate to make such a claim. So this claimed "knowledge" isn't actually knowledge at all; it's just people's beliefs and hypotheses and speculations. And that isn't a good enough basis to dictate public policy to everyone. Which is one of the key points the article we are discussing in this thread is making.

[bobbydroptables]

>We cannot justify most of the things we're currently doing on that basis.

Exactly my point. Why do you think we need to have a higher justification for good ideas (engaging in sustainable behavior) than for bad ideas (engaging in unsustainable behavior)?

>We apparently don't agree on what "reality" actually is, at least with respect to how much of an emergency CO2 emissions are. You think they're a dire emergency.

>Which is one of the key points the article we are discussing in this thread is making.

And the point you're still missing is that not doing anything to stop risky behavior is making an assumption that it is safe to continue the risky behavior. That assumption is not grounded in anything.

[pdonis]

> Why do you think we need to have a higher justification for good ideas (engaging in sustainable behavior) than for bad ideas (engaging in unsustainable behavior)?

You're misstating the alternatives. We're talking about public policy. The alternatives for public policy are "don't dictate what everyone must do in area X" or "dictate what everyone must do in area X". The former does not need a "higher justification". The latter does.

[bobbydroptables]

>You're misstating the alternatives.

No.

>We're talking about public policy.

Yes.

>The alternatives for public policy are "don't dictate what everyone must do in area X" or "dictate what everyone must do in area X".

The world is not this simple. Regardless, we must dictate that people cannot inflict externalities on third parties without compensation.

>The former does not need a "higher justification". The latter does.

Where are you getting this idea? You're just stating a conclusion without any support. I can do that too:

You are wrong, I am right. You need to scientifically justify acts that have harmful externalities. You do not need to justify harmful acts that restrict harmful externalities.

Wow, this is easy! I should have been arguing like this all along!