Canadian Politics Today

ROTFL - you really have no clue how climate scientists come up with their projections do you? Any claim of a model that estimates future consequences is first and foremost an economic model because the consequences are a question of economics. IOW - you must agree that "climate projections" are nothing but guesswork since you conceded that is all that economic  models are. This is progress.
The opinion of climate scientists on what to do is as relevant as the opinion of a bus driver because they do not have the engineering knowledge required to determine what is the most cost effective course of action. And given the fact that we agree that predictions of future consequences are nothing but guesswork that puts some limits on how much hardship we should endure today to deal with the problem.

I see you didn't bother to read the article I linked. Typical of those who don't like to find out they're wrong. Your second notion is quite simple to unravel as well, the scientists educate the engineers on what needs to be achieved and let them then use their knowledge to effect it. Here's a simple example: let's say your driving home and steam starts to emanate from under the hood, you can determine something is wrong but you're not mechanically inclined, so what would YOU do? Pull into a garage and let a mechanic fix the problem.