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Engineering
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 Quote by mege Why would each group see a different rate of inflation? I would like to think that $.79 buys a candy bar now (or$.59 15 years ago) if I'm 29 or 59. Age shouldn't matter.
Sure, the candy bars cost the same for everybody, but your total purchases over a year will show a very different pattern for a 30 year old and a 60 year old. Obvious exaamples: Many 30 years olds will be spending a lot of money on raising their kids. Most 60 year olds will not (except perhaps buying the occasional candy bar for their grandkids). A 30 year old commuting long distances to work will spend much more on fuel and transport than 70 year old retirees. Etc, etc...