CPI = minimum inflation the CB is willing to divulge.

The methodology is almost comical. If steaks are $10, then go up in price forcing people to buy ground beef for $10 instead they just substitute the item in the basket to show that prices didn't change.

They determine hosing prices by surveying grandmas who haven't had a rental in 30 years to ask how much they think they would rent their house for. If grandma says $300/mo then that's the price of housing. They don't even bother to measure actual rent or mortgage prices.