What if you're wrong? CO2 may lead to a runaway greenhouse effect, making the earth uninhabitable in the long run (turning it into a Venus look-alike).
I don't think we can risk this outcome (and the extinction of our race) just because because a couple of people think CO2 may not cause global warming.
I don't think an environmental Pascal's Wager is a strong position to base actions on. Reducing emissions will have a strong effect on our societies and people's lives (and global economics), so it's important to weight things properly.
Not saying you're wrong, just that criticisms of Pascal's Wager have validity.
> Reducing emissions will have a strong effect on our societies and people's lives
Let's be a bit more concrete about this. In the near term, reducing emissions is going to reduce economic output. That is literally going to kill people. (The stress of poverty kills people. Lack of money to pay for food and healthcare kills people. So unless you've got a redistribution scheme that you can make actually happen in the real world, reducing economic output means killing people.)
That's the other side of this "Pascal's Wager". If we run off and cut emissions before we know how to do it without reducing economic output, more people that we would like are going to die. They're not going to make headlines, because they're going to be marginal people in marginal places... oh, yeah, the same kind of people who are going to die (first) from climate change.
It may be a net win to fight climate change. But don't act like it's completely one-sided.
But we don't know that the endgame is extinction of the race. We don't even know when various benchmarks will occur ( say, sea level at x% higher ) .
The physics of a Venus aren't on the table - SFAIK, all the carbon we're digging up and burning was once animal or vegetable matter, derived from a Carboniferous era level of atmospheric CO2.
I don't think we can risk this outcome (and the extinction of our race) just because because a couple of people think CO2 may not cause global warming.