Debates surrounding the question of Hamlet’s madness generally centre...

Debates surrounding the question of Hamlet’s madness generally centre around ‘four different
hypotheses:
? that Hamlet was throughout perfectly sane, but feigned insanity;
? that Hamlet was after his interview with the Ghost more or less insane;
? that in Hamlet insanity was latent, but was only fully developed after the Court-play;
? that Hamlet was neither insane, nor feigned to be so’ (Kenneth Deighton).
In light of this statement, assess the extent of Hamlet’s madness.