Is evaluation obsolete in a post-truth world?

The contemporary post-truth phenomenon is characterised by denial of facts and tolerance of politicians' lies. It has enhanced the appeal of authoritarian and nationalist leaders as a populist reaction to policy failures. While emerging market countries hugely benefited from globalization, the hourly wages of working people in high-income countries have stagnated while inequality has surged, and environmental stresses have escalated. Post-truth dispositions are distorting decision making in the public sphere and they have increased public distrust of knowledge professionals. This is likely to aggravate the very problems that gave rise to the post-truth phenomenon. Evaluation can help reverse the trends that underlie voters' anxieties, amplification of tribal prejudices and appeals to national pride through sound advice, transparency and public education. This will require new evaluation policy directions. Evaluation internationalization, diversification, democratization and professionalization will have to take place simultaneously.