[stylin19a]

I contacted katharine hayhoe, of the co-authors, about providing some context to the statement I was scratchin my head over. Here is her response:

"The fact that temperature and sea level was much higher back then is a serious cause for concern.
We all understand how it takes years, even decades, before we start to experience the effects of smoking a pack of cigarettes a day.
In the same way, it takes centuries for the Earth's climate system to equilibrate to the enormous amount of CO2 we are dumping into the atmosphere.
We will not see the full effects of our actions for a long time, but what the paleoclimate record tells us is that when that happens, the world will be a very different place.
Even if we could miraculously freeze levels of atmospheric CO2 at 400ppm, the amount of long-term change will be nearly unimaginable.
Two-thirds of the world's largest cities and the land that a substantial fraction of the world's population currently lives on will be under water."

[Bob434]

well write her back and have her explain to you how just 0.00136% of the atmosphere can possibly be causing global climate change- Also ask her what caused the large amount of CO2 back when? and then ask “If there were large amounts of CO2 back when- how can you, with a straight face, claim that man is the cause for global climate change? Our production of CO2 amounts to just 0.00136% of the atmosphere- If I dump 0.00136% of 100 degree water into an olympic sized pool of 90 degree water- it is NOT going to cause catastrophic change to the water- it will almost immediately reach equilibrium-” Then tell her people are sick and tired of the climate alarmist lies-