Please cite support for your claim that effects of surpassing these boundaries are linear.
The people who actually know the science in these areas do not agree with you. Specifically with regard to global warming, the science has been clear on this for decades now: past around 1.5C, we risk cascading effects that could be uncontrollable. This is really fairly common in natural systems: if you mess it up, past a certain boundary effects accelerate and are uncontrollable.
The people who actually know the science in these areas do not agree with you. Specifically with regard to global warming, the science has been clear on this for decades now: past around 1.5C, we risk cascading effects that could be uncontrollable. This is really fairly common in natural systems: if you mess it up, past a certain boundary effects accelerate and are uncontrollable.