Steps to Colonizing Space

The third technological revolution which I see coming is the expansion of life's habitat from Earth into the solar system and beyond. This revolution may take a little longer than the other two. Perhaps it may take as long as a hundred years from now. In charting a possible course for this revolution, I take as my guide Ben Finney, an anthropologist at the University of Hawaii who has made a detailed study of the Polynesian navigators and their voyages of colonization from island to island ac...

 Imagining the Primitive Mind

AND now let us indulge in a very interesting speculation; how did it feel to be a man in those early days of the human adventure? How did men think and what did they think in those remote days of hunting and wandering four hundred centuries ago before seed time and harvest began. Those were days long before the written record of any human impressions, and we are left almost entirely to inference and guesswork in our answers to these questions. [...] Primitive man probably thought very much ...

 Wizardry Violates the Conservation of Energy

“You turned into a cat! A small cat! You violated Conservation of Energy! That’s not just an arbitrary rule, it’s implied by the form of the quantum Hamiltonian! Rejecting it destroys unitarity and then you get ftl signaling! And cats are complicated! A human mind can’t just visualize a whole cat’s anatomy and, and all the cat biochemistry, and what about the neurology? How can you go on thinking using a catsized brain?” McGonagall’s lips were twitching harder now. “Magic.” “Magic isn’t eno...