Originally Posted by
Denny Crane!
All pretty simple stuff but to what to degree? That is not simple at all, the human effect is not simple and understanding the natural processes that release and absorb are not simple. Speculation treated as speculation is fine but its pretty useless from laymen (and often from scientists).
Specific effects, yes, are complex. Stuff like total output of greenhouse gases are very easy, as well as how much is absorbed and released by nature. Humans are the biggest net contributor of CO2 (especially from fossil fuels, which is what matters in the case of the carbon cycle).
Speculation vs speculation on anything other than opinions is just normal argument and should obviously be taken with a grain of salt. That being said, nothing I have put forth so far has been speculation.