The gravamen of this essay is that these signifiers (the jargon of SF [science fiction]) function not merely as a set of isolated signs but as descriptions of a stock set of prototype worlds which they logically and conventionally imply, and which permit writers to specify mainly what (if anything) is unique about their world vision rather than what is shared with the rest of SF.

The argument leads to the conclusion that an omnipotent being could rationally be able to do one xor the other and still be omnipotent.

By the 1940s, his work in this area was so advanced that German rocket scientist Wernher von Braun remarked that “Goddard's experiments in liquid fuel saved us years of work, and enabled us to perfect the V-2 years before it would have been possible.”

He marked four widths of the becket to the left, then thrusting and penetrating for fully 18 inches into the soggy peat, withdrawing and twisting the becket, completing the final thrusting on the back run.