Marona explains why Piketty's research is bogus.

Journalist Mário Marona called the World Wealth and Income Database study, co-directed by economist Thomas Piketty, which stated that income inequality in Brazil did not decrease between 2001 and 2015, a "cascade." Marona points out that the study draws its conclusions from an analysis of income tax returns in Brazil over the last 16 years. "It makes no sense for a study to be based solely on data from the Federal Revenue Service in a country like Brazil, where 85% of the population does not file income tax returns, a percentage that includes ALL the poor," says Marona, who also criticizes Folha de S. Paulo for not noticing the error.

September 10, 2017, 11:55 PMUpdated June 28, 2018, 15:48 pm

Journalist Mário Marona called the World Wealth and Income Database study, co-directed by economist Thomas Piketty, which stated that income inequality in Brazil did not decrease between 2001 and 2015, a "cascade"; Marona points out that the study draws its conclusions from an analysis of income tax returns in Brazil over the last 16 years; "It makes no sense for a study to be based solely on data from the Federal Revenue Service in a country like Brazil, where 85% of the population does not file income tax returns, a percentage that includes ALL the poor," says Marona, who also criticizes Folha de S. Paulo for not having noticed the error (Photo: Aquiles Lins).

By Mario Marona, on your Facebook - FAKE RESEARCH ON THE FRONT PAGE OF FOLHA:

With all due respect to Piketty, author of an important book on income inequality in the world, the research published by his institute and featured on the front page of Folha is a hoax or, at the very least, commits an absurd elementary error in its reporting, which the newspaper had a duty to notice.

He draws his conclusions from an analysis of income tax returns in Brazil over the last 16 years.

It makes absolutely no sense for a survey to be based solely on data from the Internal Revenue Service in a country like Brazil, where 85% of the population does not file income tax returns, a percentage that includes ALL the poor.

A curious error, since in his book, "Capital in the Twenty-First Century," Piketty does not draw his conclusions from a single indicator, such as income tax, but from all indices capable of measuring or indicating income, purchasing power, and human development.