The point here is that there may well be other interesting information in the price/quantity data than the consumer price index.

Yeah, the lower deciles are probably just too dumb to use available personal services such as chauffeurs and personal shopping assistants, foolishly forgo tax benefits from home ownership, spend most of their transportation budget on public transit, wasting all that time walking from home to the bus stop, etc.

"It is not necessary to have hope in order to persevere."