To know that something is impossible. To keep your rational judgements entirely intact, without self deceit. To refuse any way to relieve the tension without reaching the goal. To shut up and do it anyway. There's something in that that grabs at the core of the human spirit.

Does activating the 'human spirit' deactivate the human brain, somehow?

Because it seems that the word 'impossible' is being seriously abused, here, to the degree that it negates the message that I presume was intended -- the actual message is nonsensical, and I am willing to extend enough credit to the poster to take for granted that wasn't what he was trying to say.