The area's economic health, which uses the attractiveness of serving staff as its metric size offered.

theory is that during economic prosperity, attractive people have an easier time landing lucrative work psychological phenomenon called the halo effect. During economic hardship, these attractive people will be laid off faster if you also do not have the intelligence and skills, leading to an influx of glamorous people who apply for employment in the service sector.

index is often praised for the fact that the main indicators, i.e., it is fast to update itself in response to changes in economic conditions.