Slippery Slope
Also: Slippery Slope
Logical Fallacy: Slippery Slope
Suggesting that taking a minor action will inevitably lead to major consequences.
Graphics Resource page
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.