The resolution of Curry’s paradox is a contentious issue because resolutions (apart from trivial ones such as disallowing X directly) are difficult and not intuitive. Logicians are undecided whether such sentences are somehow impermissible (and if so, how to banish them), or meaningless, or whether they are correct and reveal problems with the concept of truth itself (and if so, whether we should reject the concept of truth, or change it), or whether they can be rendered benign by a suitable account of their meanings.
— Wikipedia on Curry’s paradox
Regarding Curry’s paradox is an unresolved important question is silly.
Paradox is due to the mixing of para-level (meta-level) and original level. As long as we do not allow mixing levels, there are no paradoxes. Every sentence should only be allowed to describe sentences which have lower levels.
— Me@2012-10-13 02:41:50 PM
2012.10.14 Sunday (c) All rights reserved by ACHK