In Poland my audience is all women between 18 and 30. At U.S. conventions you have the fantasy and science fiction crowd. At Harvard you have an entirely different audience. It's so schizophrenic.
The thing about science fiction is that it's totally wide open. But it's wide open in a conditional way.
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In teaching man experimental science results in lessening his pride more and more by proving to him every day that primary causes like the objective reality of things will be hidden from him forever and that he can only know relations.