The megaprojects paradox is still there: while large investments, infrastructures, facilities, and variegated ventures are more in demand than ever, scientific criticism and public opposition are increasingly strong, and difficulties to formulate alternative policies and development patterns are notorious. The impossibility of getting out of the paradox is due to the managerial and activist traps in which the scholarship on megaprojects is caught. This paper advocates for a more direct and conscious cross-fertilization between managerial and activist approaches on megaprojects in order to overcome their respective traps. It identifies 10 axes for further future collaboration which will serve as a basis for a shared research agenda. In this research agenda, the study of megaprojects appears as an autonomous research field in which the relationship between megaprojects and development patterns is systematically assessed and the analysis of policy alternatives to megaprojects becomes pivotal.