The Welshman carded a third-round 65 at Crans-sur-Sierre for a 13-under-par as he chases a second European Tour title.

BBC: Dredge won his only previous title in Madeira

But Sierre Leoneans have seen too much suffering in the past few years to believe their country's problems are solved.

ECONOMIST: Sierra Leone

Last year at Crans-sur-Sierre he led by four shots going into the final round but missed a short putt for victory and lost in a play-off to Frenchman Jean-Francois Lucquin.

BBC: Westwood wants senior Ryder role

In his lecture, Ball presented a number of cases like this, from Kosovo, Guatemala, Sierre Leone and Timor-Leste, where sound and verifiable data was used effectively to answer a small question, then stretched to answer a broader question for which it was not suited.

FORBES: Patrick Ball on the Perils of Misusing Human Rights Data