Incredible - Burning All Our Fossil Fuel Reserves Increases CO2 Level only 40%

From Quadrant Online we have an interesting calculation by Dr Tom Quirk showing that if we were to burn all our known fossil carbon fuel reserves in one year we could increase CO2 concentration in the atmosphere by only 40%.    The Warmists claim we are heading toward doubling CO2 and apocalypse but there there just plain ain't enough fossil carbon to do that. Given that we will use our reserves over many decades and with man-made Co2 only a tiny part of Nature'sCO2 cycle it is hard to see what is the problem.