$1.9 per day is extreme poverty, but there are other kinds of poverty as well. I think the article linked in your citation explains it nicely: https://ourworld

$1.9 per day is extreme poverty, but there are other kinds of poverty as well. I think the article linked in your citation explains it nicely: https://ourworldindata.org/poverty-at-higher-poverty-lines https://ourworldindata.org/poverty-at-higher-poverty-lines > But that doesn’t mean that we shouldn’t care about what is happening relative to higher poverty lines. The evidence shows that there is a clear and continuous relationship between material deprivation and subjective well-being, so it would be wrong to celebrate shifting daily incomes from $1.89 to $1.91, even if this shift technically means abruptly reducing extreme poverty. People living on $3, $5, or $10 per day also face substantial hardships, and are still living in poverty. Taking into account these other bands of poverty, you can see the absolute number of people in the lowest bands of poverty has increased from 3.3 billion in 1981 to 4.66 billion in 2017.