Focus on poverty: big data is no shortcut to equality.

Author:Williamson, Roger

27 May 2014

For a school prize in the 1960s, I insisted on having a book on the revolution taking place in traditional social life and the embrace of new trends. The book was The Neophiliacs by Christopher Booker (you can now buy a used copy on Amazon for GB [pounds sterling] 0.01, nearly US$0.02). The price in itself should be a warning that excitement for the new big thing may not last.

Now the hype is about big data, and it is good that SciDev.Net is presenting the claims and counterclaims to help us assess its importance.

Having tried hard to get my head around it (or part of it), I have to admit that I need more time. I can see the point, but I remain unconvinced that it really is the tool to help the poorest. Like randomised controlled trials, which work well for assessing drugs, I think it would have some development-related applications, but I doubt it is the magic bullet claimed by its most enthusiastic advocates.

I am not even sure that what most people think of as big data is really the 'data revolution' that the UN Secretary-General's High-Level Panel on post-2015 development are looking for.

I recently asked esteemed economists Finn Tarp and Tony Addison of UNU-WIDER what sort of data they think are needed for a data revolution in development.

Their answer was more prosaic than the 'magic' of big data.

Properly collected data--for example, through regular household surveys--provided the material needed to check what happened to poor households in Vietnam during the switch to a market economy. As Tarp points out, despite the country growing rapidly, many households initially became poorer. I cannot see how that would be picked up from mobile phone data, for instance.

Big data may help with some analyses of migration or the spread of infection, but I have yet to see anything that would enable you to design policies to deal with the impacts of inequality. I suspect there is no short cut. If you want good development data, strengthening national statistical...

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