The debate conducted in this journal and elsewhere on the effectiveness of eye movement desensitization and reprocessing (EMDR) is characterized by incredulity, fervent belief and emotion. Theorists and clinical pragmatists, not to mention the “discovers” of EMDR, have often taken up oppositional stances that impede rationale debate. Whilst some may be offended by the overt commercialism and messianic fervour of the EMDR lobby, the best response is to engage in dialogue, collaboration and scientific experiment. These experiments should combine the best randomized clinical trial methods with experimental deconstruction of the complex mix that now comprises EMDR. Those who have developed EMDR should cease the commercial and empirical protectionism that has characterized the EMDR movement and open their methods to such investigation by the healthily sceptical.