This part of your statement is actually a little bit of the problem here, too. Can you define more clearly what you mean by this?
I'm very interested in exploring the issue better, but having to constantly sift through piles of hyperbole from both sides, it makes it very hard to remain interested.
My trivial understanding of everything goes: greenhouse gasses cause warming and we're the primary source of their increase in the past century so, therefore, we're causing the planet to warm. That's easy enough to understand. But after that, I find that I'm either an idiot because, duh, its all a hoax or that our species will be extinct tomorrow if I don't do something yesterday.
It's incredibly tedious to try and gain a better understanding of everything.
Short version: CO2 causes general warming. Ice caps on the pole are necessary to keep the planet cool by reflecting a lot of the incoming light. General warming will cause ice caps to melt, which causes more energy from the sun to be absorbed, which causes even faster warming. Permafrost areas will also thaw, releasing CO2 and methane, resulting in even more warming. Strong heat increases can damage rain forests, reducing the CO2 absorption, also speeding up warming. Result: Best case scenario: Loss of coastal regions to sea rise. Worst case scenario: Earth becomes a second Venus.
Edit: To downvoters: If i got facts wrong, please do correct me. The above is my understanding of the sitation and i may have gotten some wrong.
> This part of your statement is actually a little bit of the problem here, too. Can you define more clearly what you mean by this?
That was my question. I appreciate your summary of the situation and I think your worst case assessment answers my question. Unfortunately, there's an incredibly huge gap between "loss of coastal regions" and "Earth becomes a second Venus". One situation sounds highly surmountable while the other sounds like the certain extinction of our species. When you use phrases like "assured doom", I tend to think of outcomes more like the latter and I find that type of rhetoric almost as unhelpful as denying the whole situation. It just doesn't help anyone.
I apologize for picking on you specifically, you're just the first one to express this kind of sentiment I came across.
And you are basing this on what, exactly? Because the answer right now to that question is "we don't know how huge that gap is". And we do not have a second Earth to test your theories on. Are you really willing to take the risk of assured doom based on your belief that "the gap between now and assured doom is incredibly huge"?
Here's the thing with dynamic equilibrium: it is only locally stable. We do not know how exactly how resilient our ecosystem or our planet is to rapid changes. Some of us are not willing to find out, because we only have a single destructive test at our disposal.
I made that statement based on my limited ability to extrapolate how our species might deal with the two scenarios. It sounds much, much easier to me, while still being incredibly challenging, to deal with large population displacement versus dealing with our planet becoming entirely uninhabitable.
Now, if I understand what you're saying, it sounds like our understanding of the probabilities of the two scenarios occurring isn't exactly known. While the two scenarios, at face value, sound incredibly different (to me at least), the likelihood of one happening over the other could be very similar. I agree that we should absolutely take that position seriously and that we should absolutely do things to guard against the possible outcome where our planet becomes uninhabitable.
All that I'm asking is that we say it like that. Lets say that instead of speaking in absolutes (e.g. "its a hoax", "we're doomed"). That's all I'm taking issue with. It doesn't help the discussion no matter what side of the argument those kinds of statements come from.
> And we do not have a second Earth to test your theories on. Are you really willing to take the risk of assured doom based on your belief that "the gap between now and assured doom is incredibly huge"?
To be clear, I don't have any theories I'd like to test nor do I know what I might be willing to risk. As I said in my original comment, my understanding of everything is incredibly rudimentary and I'm trying to do a better job seeking information to help me answer questions like that.
Incorrect.
A complete planet-devastating runaway scenario is much more likely, as it requires merely that humans continue to operate as they are doing right this very moment.
The best case scenario only comes about if we get our shit together.
That's the gap that separates worst and best case: Humans change nothing <---> Humans make a supreme effort. Probabilities follow directly from the probabilities of these two things.
Sorry for not having stated that clearly.
No, what I'm saying is that we don't even know whether these really are two separate scenarios. We can't afford to plan for a large population displacement because by the time we get to that point, there may be nothing we can do to prevent our planet from becoming uninhabitable.
To me it seems like simple risk management, even with a small probability the loss would be near infinite, whereas the loss of "doing something" is probably negligible. (carbon tax, energy transition, discouraging procreation, anti-consumerist lifestyle … probably all beneficial for humanity from a birds-eye view)
[1] http://www.wolfandwildlifestudies.com/downloads/oxygendeplet...
[2] https://link.springer.com/article/10.1007/s11538-015-0126-0
Here's the problem with people like you: In the face of assured doom for yourself if you're young enough, or most likely your children or siblings' children, you choose to either:
1. Make highly ignorant statements without doing even the slightest bit of research, in a manner that is consistent with people suffering from a clear lack of skill in critical thinking.
or
2. Troll people.
And it is completely impossible to tell on which side you fall. As such it is entirely impossible to approach you in any kind of sane or rational manner.