> You're not the arbiter of what's reasonable doubt.
You are attacking a strawman, and boy, you are attacking it hard. I never said that I'm the arbiter of what's reasonable doubt is. I said that this is scientific concensus.
> You should spend some of your own time researching both sides of the argument [..]
At one point in time, there actually was a debate and I did research both 'sides'. But there are no two sides to the argument anymore. There is the scientific fact of climate change, that's it. There's nothing to debate about it. Let me put it that way; do you think you have to seriously argue with someone who says that the earth is flat? Because that's where you're currently standing, from a scientific view; denial of antropogenic climate change has about as much standing as a flat-earther. It might work as a hobby or a party-gag, but certainly not as an informed basis for policy decisions.
> To me, it comes down to some basic scrutiny.
It doesn't really look like that, to me. Because all of your points are either irrelevant or disproven. They instead sound like the typical sound-bites of deniers of antropogenic climate change.
> 1) Earth has been hotter in the past.
Yeah, so what? At some point in time, Earth did not exists. How are any of those two things relevant to antrophogenic climate change?
> 2) CO2 levels were much higher in the past.
See above.
> 3) There is evidence that CO2 lags temperature increase, thus isn't causative.
This is an old one, often explained. https://realclimatescience.com/2019/04/does-co2-lead-or-lag-....
4) Solar output is highly correlated with temperature fluctuations.
Yeah, this is an old one too; https://climate.nasa.gov/blog/2910/what-is-the-suns-role-in-...
To quote myself;
> Now, if you go ahead and actually produce valid criticism on the current climate models and their predictions, have some valid credentials with regards to climate modelling and have some credible research to show for, I'll take everything aforementioned back and put on the dirty diapers myself.
What you bring up is not valid criticism of the models or the approaches of climate science but often and long discarded interjections that border on "But if the earth is round, what's keeping them on the ground on the other side of earth"?
> You have no factual basis for asserting that the temperature change is 'massive' nor that the speed of change is 'unprecedented.'
Yep, I do. There are many studies about it, i.e. https://journals.sagepub.com/doi/full/10.1177/20530196166880... just to pick one. The change in atmospheric composition and temperature is unprecedented. Usually, these things take place over hundreds and thousands of years (yeah, there are super volcanoes and asteroid impacts that wreck havoc. But do you really want to compare humanity with a cataclysmic event?).
> Feel free to backup this claim.
This is pretty much self-evident, there's nothing to prove. Res ipsa loquitur.