 It is the second disjunct that allows credence gaps. De Finetti (1970 [1974: sec. 3]) also argues that, when the Dutch Book argument for Probabilism is carefully examined, it can be seen to support only the extensibility version rather than the standard one. His idea is to adopt a liberal conception of betting dispositions: one is permitted to lack any betting disposition about a proposition, which in turn permits one to lack a credence in that proposition.