I'd respectfully differ there,  in that much can/should be learned from the lessons of history, which arguably serve to define who we are as a species, and what we're capable of and likely to do under given circumstances, as I'm sure you know.  Accumulated empirical data necessarily subordinates all theories and/or outright fantasies, as it logically should. Truly has it been said that "those who fail to learn from history are..."/etc.  I feel some proper pity for Tree there, in that there's nothing in history that supports his particular fantasies.