During her two-month secondment to the University of San Andrés (UdeSA) in Buenos Aires, Ilona Matysiak from Warsaw University presented her findings on the Third Sector and social economy in Poland to the Argentinian audience. The research seminar, held in Spanish, aimed at facilitating discussions on commonalities and differences between Poland and Argentina. This output from Ilona’s research has been accompanied by several discussions with staff members and practitioners in Argentina and by her participation in numerous case studies.