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Doctoral theses between divergent worlds are excellent occasions for doctoral candidates and the teams accompanying them to open themselves up to other modes of developing knowledge and of inventing new forms suited to alterity, interculturality, and the unprecedented character of the phenomena studied. These occasions of openness and creation nevertheless run up against formidable obstacles that instead bring about closure and suffering. Such impasses, when they are recognized, worked through, and overcome by the actors involved, can lead to new paths and, if lessons are drawn collectively from them, blaze the trail and open up the future. It is one thing to benefit from the difficulties faced in the course of a thesis and arrive, just the same, at a result that makes it worthwhile. It is another thing to learn lessons from obstacles faced together in order to mark out possible different paths for the future. Points of suffering that haunt intercultural doctoral journeys become benchmarks converging toward more open forms of construction of knowledge between divergent worlds.