论弗雷格区分“a=a”和“a=b”失败

从柏拉图到蒯因,哲学家们提出各种方案证明＂a=a＂和＂a=b＂没有区分。这些证明尽管没有逻辑错误,但是违反经验,还是有瑕疵。弗雷格通过赋予语词意义和指称,试图证明＂a=a＂和＂a=b＂在认知意义上有区分;但是,由于弗雷格允许意义不同的语词可以有相同的指称,他的努力还是功亏一篑,＂a=a＂和＂a=b＂依然没有区分。有关同一性问题的讨论,尽管弗雷格的回答符合经验,但是不如柏拉图等人的回答在逻辑上完备,没有矛盾。这是一个很无奈的结局。

On Frege failing to distinguish a=a and a=b

From Plato to Quine,philosophers presented different methods to prove a=a is not distinct from a=b.Though these proofs are correct in logic, they bear flaw as being against experience.By endowing words with sense and reference,Frege managed to prove that there is distinction between a=a and a=b.However,since it's possible for Frege to assign same reference to words with different senses,he finally failed to distinguish these two statements.In discussions about identity,though Frege's answer is in accord wit...