Full Idea
Tarski does not tell us how to apply his concept of truth to a new case, whether the new case is a new language or a word newly added to a language. This is because enumerating cases gives no clue for the next or general case.
Gist of Idea
Tarski enumerates cases of truth, so it can't be applied to new words or languages
Source
comment on Alfred Tarski (The Concept of Truth for Formalized Languages [1933]) by Donald Davidson - Truth and Predication 1
Book Reference
Davidson,Donald: 'Truth and Predication' [Belknap Harvard 2005], p.17
A Reaction
His account has been compared to a telephone directory. We aim to understand the essence of anything, so that we can fully know it, and explain and predict how it will behave. Either truth is primitive, or I demand to know its essence.