Here's a clue: It's not a problem. There's nothing the least bit "educational" about that video.
His fundamental thesis is that the more "equal" a society is economically, the better all these other social problems get. The problem is that this is a correlation-causation fallacy.
You might want to read about the problems with his way of thinking and doing research:
His bookQuote:
In the European Sociological Review, sociologist John Goldthorpe argued that the book relied too heavily on income inequality over other forms of inequality (including broader economic inequality), and demonstrated a one-dimensional understanding of social stratification, with social class being in effect treated as merely a marker for income. He concluded that much more research was needed to support either the Wilkinson and Pickett "account of the psychosocial generation of the contextual effects of inequality on health or the rival neo-materialist account".[12]
Quote:
Richard Reeves in The Guardian called the book "a thorough-going attempt to demonstrate scientifically the benefits of a smaller gap between rich and poor", but said there were problems with the book's approach. "Drawing a line through a series of data points signals nothing concrete about statistical significance [...] since they do not provide any statistical analyses, this can't be verified." He later noted that, "The Spirit Level is strongest on Wilkinson's home turf: health. The links between average health outcomes and income inequality do appear strong, and disturbing".[13]
Quote:
John Kay in The Financial Times said that "the evidence presented in the book is mostly a series of scatter diagrams, with a regression line drawn through them. No data is provided on the estimated equations, or on relevant statistical tests".[14] Boyd Tonkin, writing in The Independent, described it as "an intellectual flagship of post-crisis compassion, this reader-friendly fusion of number-crunching and moral uplift has helped steer a debate about the route to a kinder, fairer nation.[15] Will Hutton in The Observer described it as "A remarkable new book ...the implications are profound."[16] Roy Hattersley in the New Statesman called it "a crucial contribution to the ideological argument",[17] and the New Statesman listed it as one of their top ten books of the decade.[18] Charles Moore in The Daily Telegraph declared it to be "more a socialist tract than an objective analysis of poverty".[19] Gerry Hassan in The Scotsman said that Wilkinson and Pickett's claim that "more equal societies almost always do better" was "a universal, sweeping statement - which cannot be substantiated by most of their data."[20]
Quote:
In 2010, Tino Sanandaji and others wrote an article for the Wall Street Journal in which they said, "when we attempted to duplicate their findings with data from the U.N. and the Organisation for Economic Co-operation and Development (OECD), we found no such correlation".[21] The same group of researchers published a report for the Taxpayer's Alliance providing details of their data analysis and coming to the conclusion that "the most straightforward measure of health simply has no robust correlation to income inequality when comparing industrialized countries using standard OECD and UN statistics". Pickett and Wilkinson addressed the Wall Street Journal article in a letter to the Journal[22] and published a response to the Taxpayers Alliance report on their own site.[23] In their response to the Wall Street Journal they said ,"...we use income inequality data from the United Nations, rather than the OECD, because the OECD data were not intended primarily for cross-national comparisons. However, even if we test our results using the OECD measures we find 28 of 29 relationships are still significant".'[22]
Peter Robert Saunders, Professor Emeritus of Sociology at Sussex University, published a report for the think tank Policy Exchange questioning the statistics in The Spirit Level. He claimed that only one of the correlations in the book—that between infant mortality and income inequality—stood up to scrutiny, and that the rest were either false or ambiguous.[24] Wilkinson and Pickett published a response defending each of the claims in the book and accusing Saunders in turn of flawed methodology.[7] Saunders statistical analysed was also assessed by Hugh Noble, who published an article explaining statistical inference in "The Spirit Level" and assessing the critique offered by Peter Saunders. Noble concluded that the critical analysis of The Spirit Level offered by Peter Saunders 'cannot be taken seriously because it contains so many serious technical flaws'.[25]
Christopher Snowdon, an independent researcher and adjunct scholar at the Democracy Institute,[26][27] published a book largely devoted to a critique of The Spirit Level, entitled, The Spirit Level Delusion: Fact-checking the Left's New Theory of Everything.[28] One of its central claims is that Wilkinson excludes certain countries from his data without justification, such as South Korea and the Czech Republic. It also argues that Wilkinson and Pickett falsely claim the existence of a scientific consensus when much of the literature disagrees with their findings. Wilkinson and Pickett released a response to questions from Snowdon[29] and responded to similar criticisms in the Wall Street Journal.[22] Snowdon has in turn responded to their criticisms on his blog.[30]
This man's views are anything but authoritative, or representative of any consensus.