Invention (n.) has the unconscious's finger in it: if it puts a weapon in your hand, it is aiming at violence of some kind.
Invention (n.) out of oneself yields, Paracelsus admits, not enough to patch a pair of breeches with.
Invention (n.) that is conscious tries to create unbroken transitions, whereas a dream takes no account of gaps, which then provoke interpolations when it is consciously retold.
Invention (n.) often begins as mythological anticipation: alchemy is the mother of chemistry, and the scientific mind was born in the womb of the unconscious.
Invention (n.) comes from invenire, "to come upon": nobody invented myth in a clever moment; to invent is to find, with some inkling of what one will find.