Imagination generally works best with just a small amount of stimulus.
If you go and watch a movie, there will usually be precious little left to your imagination. Where it does have scope, it will be subtly led by the writers and directors. If though, you lie in a dimly lit room, listening to odd creaks and whirrs from around the house, you can soon imagine a host of unlikely invaders. You can do all the imagining you wish but what you really sorely need is information. If you can't see the right date above click here.