... and year-over-year comparisons are often lazy to the point of being grossly misleading. I've seen headlines recently screaming about the huge increase in murders in NYC in 2015 compared to 2014 and affixing blame for it, where the increase is about 5%, or on the order of tens of murders, which is tiny
in the scheme of things and probably impossible to ascribe, statistically, to any particular cause. </rant>