> because things are only ever roughly equivalent.
This is what people seem to misunderstand about PPP. PPP applies for daily/internal market goods. The cost of milk, eggs, clothing, etc. Which is definitely important. On a more macro scale it also compares a VW Vento in Mexico with a VW Jetta in the US...two particularly different cars with ~6000usd gap in price.
In other words, it compares basic goods for living; fudges some basic "luxury" goods, and pretends that that's representative of lifestyles. It ignores (in Mexico, for example) the fact that consumer electronics are ~20-40% more expensive (if available at all), access to truly equivalent basic luxuries (a VW Jetta for a VW Jetta) is still slightly more expensive, access to equivalent security/infrastructure/business guarantees nigh impossible to receive, and just the vast gulf of wealth inequality that exists, etc.
This is what people seem to misunderstand about PPP. PPP applies for daily/internal market goods. The cost of milk, eggs, clothing, etc. Which is definitely important. On a more macro scale it also compares a VW Vento in Mexico with a VW Jetta in the US...two particularly different cars with ~6000usd gap in price.
In other words, it compares basic goods for living; fudges some basic "luxury" goods, and pretends that that's representative of lifestyles. It ignores (in Mexico, for example) the fact that consumer electronics are ~20-40% more expensive (if available at all), access to truly equivalent basic luxuries (a VW Jetta for a VW Jetta) is still slightly more expensive, access to equivalent security/infrastructure/business guarantees nigh impossible to receive, and just the vast gulf of wealth inequality that exists, etc.