Editing Subsidy (section)

===Definitions===
Although subsidies can be important, many are "[[perverse incentive|perverse]]", in the sense of having adverse [[unintended consequences]]. To be "perverse", subsidies must exert effects that are demonstrably and significantly adverse both economically and environmentally.<ref name="cheapMyers and Kent 2001" /> A subsidy rarely, if ever, starts perverse, but over time a legitimate efficacious subsidy can become perverse or illegitimate if it is not withdrawn after meeting its goal or as political goals change. Perverse subsidies are now so widespread that as of 2007 they amounted $2 trillion per year in the six most subsidised sectors alone (agriculture, fossil fuels, road transportation, water, fisheries and forestry).<ref name="Myers 2007">{{cite book|last=Myers|first=N.|title=An introduction to ecological economics|year=1997|publisher=St. Lucie Press|location=Boca Raton, Fla.|isbn=978-1884015724|chapter-url=http://www.eoearth.org/view/article/155197/|editor=Costanza, R.|editor2=Norgaard, R.|editor3=Daly, H.|editor4=Goodland, R.|editor5=Cumberland, J.|access-date=2013-08-03|chapter=Perverse subsidies|url-access=registration|url=https://archive.org/details/introductiontoec0000unse_q2b0}}</ref>