It's very Asimov-like, in that the elements where the author puts in the most thought and energy are about human interactions (or human/psychic, human/alien, human/robot, etc) handled in a very rationalist, almost mechanistic way.
And also like Asimov, there's super-science stuff (e.g. warp drives in Foundation, time travel in The End of Eternity) that isn't "explained" in any way, it's just part of the setting.