Two or three reasons why two are better than one

Evaluations come in many shapes and sizes. I have led multidisciplinary teams in multi-year assignments, and carried out smaller assignments all by myself. Last year was a lucky year, because most of my work happened in one of my favourite configurations: the tandem or duo - as in two competent persons with complementary or partly overlapping skills and knowledge working together as evaluators on an equal or near-equal footing. Two evaluators working together - even if one of them participates for a shorter spell of time than her colleague - means so much more than the sum of two persons' capacities.