A collection of short writings, originally appearing in a number of magazines, on science fiction. I found the early sections most interesting but it all went on for quite a while, and, unsurprisingly given the format, could be a little repetitive.

And this is picky on my part, but the scientific nit-picking on Orwell's 1984 seems to me a perfect example of not seeing the forest for the trees. Yes, the trees are not very accurate, but the forest is fascinating and it's hard for me not to side-eye Asimov for missing that.