Crossing an extreme-poverty line is a major gain without being a comfortable life
The international extreme-poverty threshold helps identify people facing exceptionally severe material deprivation. It is not a claim that everyone above the threshold has enough for a secure life.
Max Roser’s essay explains both the long-run decline in extreme poverty and the scale of deprivation that remains. Comparisons adjust for purchasing power and include estimates of noncash production, rather than simply counting dollars received as wages.
The page explicitly notes that World Bank data have been revised since its original publication. Historical headline counts should therefore be read with their data vintage attached. The conceptual point survives those revisions: a society can achieve meaningful gains against the worst poverty while remaining poor by a more demanding standard. Choosing a threshold determines the question a statistic answers, not the full range of needs people have.