What We Did Not Say In The Previous Post...

...but have said often enough before.

Poul Anderson addressed the Frankenstein question, "Is it right to create human beings?," in his posthumously published novel, Genesis.

Anderson wrote several future histories and his Technic History is longer and more complicated than Heinlein's Future History.

Wells hinted at time travel paradoxes whereas Anderson fully developed both such paradoxes: circular causality and causality violation.

Anderson retold Norse myths and sagas.

The surprise in the previous post came when I realized that Buck Rogers, although not originally a space traveller, had inspired several later space travelling science fiction heroes and therefore that Poul Anderson's Dominic Flandry might be regarded as one culmination of this tradition in popular fiction.