SUBSTITUTION AND INCOME EFFECTS. There's a mini-dissertation by Jane Galt that treats Ramen noodles as an inferior good. The serious point (she did study at Nobel Land) compares and contrasts changes in marginal tax rates with targeted tax cuts (to be more specific, exclusions, exemptions, deductions, and credits -- thanks, Bob Lampman and Bob Hutchens) with this money paragraph. "[Righties -- this is why simply cutting marginal tax cuts is not an unambiguous boon to the economy. Lefties -- this is why marginal rate cuts are not just "giving money to the rich"]." Read and understand the whole thing, and do your fudging at Lake Geneva, or Mackinac Island (that is, if you're not racing sailboats).