Simulations do not reflect reality, particularly when the historical data is deliberately adjusted to make the earlier temperature observations colder than observed and the recent temperature readings warmer than observed to create a fraudulent appearance of a rising trend. There is also the refusal to acknowledge the failure of such computer modeling simulations to incorporate the presence of water vapor, the single dominant medium of modulating heat in the atmosphere and hydrosphere. All in all the Global Warming/Climate Change hoax and scam is the greatest perversion of science since the Age of Enlightenment. The Global Warming/Climate Change fraud dwarfs the prior Soviet science fiascos in its scope and tragic consequences to human life.
Apparently, just because it makes them fell bad about themselves.