At the time, this was the third Hartwell anthology I had read. It presents stories that have a solid foundation in sciences and math, which the editors define as hard scifi. It had creative, interesting, and very readable stories. My impression back then, this was like sipping a fine wine, as opposed to other light scifi books, which would be like sipping a cola or water. You can have them all in the end, and I do read the lighter stuff too. I do recommend this one.