The trivalent, truth‐functional theory of conditionals proposed by de Finetti in 1936 and developed in a scattered literature since has enjoyed a recent revival in philosophy, psychology, and linguistics. However, several theorists have argued that this approach is fatally flawed in that it cannot correctly account for nested conditionals and compounds of conditionals. Focusing on nested conditionals, we observe that the problem cases uniformly involve generic predicates, and that the inference patterns claimed to be problematic are very plausible when we ensure that only non‐generic (episodic and stative) predicates are used. In addition, the trivalent theory makes correct predictions about the original, generic counter‐examples when combined with an off‐the‐shelf theory of genericity. The ability of the trivalent semantics to account for this complex interaction with genericity thus appears as a strong argument in its favor.

中文翻译：

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de Finetti语义中的嵌套条件和通用性

de Finetti于1936年提出的三价真函数理论，自从哲学，心理学和语言学近来复兴以来，在散乱的文献中得到发展。但是，一些理论家认为这种方法存在致命缺陷，因为它不能正确地说明嵌套条件和条件复合。着眼于嵌套条件，我们观察到问题案例统一涉及泛型谓词，并且当我们确保仅使用非泛型（断言和静态）谓词时，被认为是有问题的推理模式是非常合理的。此外，当结合现成的泛型理论时，三价理论对原始的泛型反例做出了正确的预测。