theres no art to find the construction of mind in the face

Cards (6)

what is duncan reflecting on
the deciet of the past thane of cawdor
what technique is used
metaphor
what is the metaphor
"construction of the mind"
what does the metaphor show
people hide there true intentions which is ironic as he is just about to trust macbeth.
where is this line places
just before macbeth enters increasing dramatic irony
waht does this warn the audience
duncans misjudgement warns the audience of deceptive appearnce which would of been a key concern at the time such as the gunpowder plot