Well, yeah, we should always trust graphs that show a sudden swing trend ot a continuation given a very brief period of time. In the graph above you see "The Developed Worlds" decrease from 1960's to 1990, slight uptick 1990-1995, then down 1995-2000, flat 2000-2010 then, based on only 2 years of data, a sudden and serious exponential uptick in the projected. Um, sure.
I recall in the 1980's an instructor pointing out that there was flooding along Lake Michigan shorelines during the early 1970's to 1980's because in the late 1960's the trend for the prior 6 years was for water levels to drop so the builders
COUNTED ON the drop to continue at the same rate (call it "acceleration" if you wish) and thus building owners who relied on this and had built too close to the water ended up in trouble when water levels rose in the 70's & 80's
http://www.glerl.noaa.gov/pubs/brochures/lakelevels/lakelevels.pdf
Lessons I learned:
a) don't believe any graph that gives very limited slice of time (x axis)
and
b) watch the numbers on side to see if the graph is zeroed or not (gains and losses appear much more severe and thus create stronger emotions when shown in a limited slice than from the zero (aka, a limited slice of the y axis))
I find the graph in the prior post misleading (at best).