Full Idea
It is a common view that the liar sentence ('This very sentence is not true') is an instance of a truth-value gap (neither true nor false), but some dialethists cite it as an example of a truth-value glut (both true and false).
Gist of Idea
The Liar seems like a truth-value 'gap', but dialethists see it as a 'glut'
Source
John P. Burgess (Philosophical Logic [2009], 5.7)
Book Reference
Burgess,John P.: 'Philosophical Logic' [Princeton 2009], p.113
A Reaction
The defence of the glut view must be that it is true, then it is false, then it is true... Could it manage both at once?