This is a collection of 15 stories by Asimov from what is generally seen as the golden era of his published stories, 1940-60 (in fact all but the first one are from the 1950s). I have read nearly all of these before in other collections, some of them multiple times and they mostly come up well again, making their points about the use or abuse of technology, and the follies of humankind, all of course seen through the prism of the assumptions (Cold War, very large primitive computers) of the time in which they are written. There are not, in fact, 15 stories here, as two of them are slightly odd poems. The final story is a round robin story, in which Asimov contributes the second of five chapters, each written by a different SF author, but the storyline did not feel suited to Asimov's writing style or thinking. Overall, this is not a well put together collection, and is full of numerous typos. ( )