There will always be controversy over the hockey stick in terms of everything before the spike at the tail end. The tail end is not particularly controversial because that data more or less comes from direct temperature measurements an records. When you get to pre-industrial decades, there's fewer records to work with and you very quickly run out of records. After looking back about just over 200-300 years, you're pretty much going off of proxy measurements instead of direct ones. The upward trend from industrialization to present day isn't where you see the fighting, it's everything before that. The tragedy is that the controversy has left the realm of science and into that of politics. Scientists' careers have been destroyed for much much less such as finding data that doesn't fit with conventional thoughts even if the scientist makes no claims as to the meaning of the data.
"Don't confuse facts with reality."
-Robert D. Ballard
Last edited by Akula2ssn : 09-09-2012 at 12:08 AM.