Sir, – I would like to reassure Seán McDonagh (December 18th) that I am familiar with the economics literature to which he refers and the specific correlations reported therein.
Unlike him, I understand them. As anyone with the slightest knowledge of statistics knows, correlation is not causation. – Yours, etc,
KEVIN DENNY,
School of Economics &
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Geary Institute,
University College Dublin,
Dublin 4.