Out of all the atmospheric gases, the 'experts' chose CO2 to justify the need for a climate change control knob. 

It's like trying to steer a cruise ship using a teaspoon as a rudder. Surely these guys must have known that their argument was going to be a nonstarter. Why CO2? 

Carbon Dioxide: A Necessary and Useful Gas. Carbon dioxide is a gas that is essential for life on Earth. Humans need carbon dioxide to regulate respiration and control blood pH. Plants use carbon dioxide to create oxygen through photosynthesis.

CO2 is the 'gas of life' and without it, life on earth dies. So why have they chosen to vilify CO2 as the main contributor to our naturally changing climate?