 According to satisfaction theories, only weak conditional presuppositions should follow from embedding presuppositions in certain constructions, notably conditionals themselves. For example, imagine that you are about to go surfing for the first time in the cold waters of Northern California, and you and your interlocutor suspect that a common acquaintance, Theo, is a scuba diver, and that he may be able to help. In this context, the use of his in (38a) intuitively leads to the conditional inference in (38c):