Even some putatively "mainstream" constructivists, such as Jeffrey Checkel, have expressed concern that constructivists have gone too far in their efforts to build bridges with non-constructivist schools of thought.
Bahkan konstruktivis "arus utama" seperti Jeffrey Checkel khawatir bahwa para konstruktivis terlalu berlebihan dalam usahanya membangun jembatan dengan mazhab non-konstruktivis.