Why images and not questions
The language of the unconscious mind
Ordinary speech is one thing after another. Underneath it, there's a part of the mind that works all at once — a Gestalt, an all-at-once knowing — and it doesn't speak in sentences. It speaks in images, symbols and feelings.
Those messages don't come spilling out on request. Asking directly gets you the tidy version, the one the person has already told themselves. Give them a symbol instead and something else happens: they start explaining what it means to them, and somewhere in the middle of that sentence they hear themselves say something true.
That is the whole mechanism. You are not interpreting for them — you're giving their own knowing somewhere to land.