This the ability to become completely absorbed by an idea. It is about imaginative immersion—the ability to be absorbed by highly vivid and realistic fantasies.
This predominantly makes use of real memory details when visualizing events in our mind’s eye. This helps us to better imagine alternative pasts and learn from mistakes, or imagine new futures and prepare for them.
This is what we normally consider to be creativity with a capital C—composing an opera or discovering something groundbreaking. This is different from everyday creativity.