If you don’t believe that then try to absolutely not imagine a white bear. What did you just imagine? Imagination is an interesting thing.
Moral of Story: Nothing is impossible if you have imagination. Imagination cannot be impossible. All things imagined are possible as imagination is a real thing, in a real human brain. Go imagination!
The end of the road for imagination is bound to the end of the road of humans with imagination. That road should be quite long. I hope it’s infinite.