Thats actually a very important observation about human nature. Bottom quintile population in OECD countries, when observed in context of rest of the contempora

Thats actually a very important observation about human nature. Bottom quintile population in OECD countries, when observed in context of rest of the contemporary society, appears to be "deprived". But when same set of people are observed in the context of entire societies a few hundred years back (pre-industrial revolution?), they seem to be living a very decent life.