True.
Have you ever heard of lucid dreaming?
It is a true evidence that our brain is a machine.
Lucid dreaming is being aware of being in a dream. While in that dream, you can control anything you want. You can fly, build stuff, summon people/objects, fight... etc. ANYTHING.
That is because our brain is working much better, having so much will power that it is able to do that stuff inside your dreams.
In dreams, your brain creates and procedes the dream simultaniously, and it does it so well you don't even know it's happening, that's how powerful it is.