Malthus predicted the world would end in disaster because population would grow faster than food production-- which proved wrong because of technology in food production and birth control. Trump's thinking is that the US would lose jobs and $Trillions of dollars under the Paris Accord by drawing out the costs of carbon reduction as an ever increasing cost. Technology and innovation are already decreasing carbon at declining costs-- a few years ago no one would predict that petroleum costs would drop and coal and petroleum would be displaced by the market for clean, cheap natural gas. It is the market, technological change and innovation that is leading to fewer coal jobs. The largest source of new jobs in the US and an increasing percentage of new energy production-- over 50%-- is use of ever improving technology using clean wind and solar-- and this is the direction we are heading not backwards.