Pohl tells a great story here, creates a great culture that we know nothing about (!), and creates great characters and dialog. Plus he puts in sidebar info on topics relative to the story he is telling (want ads, prices of rooms, story of a flight that failed, notices from the central power on the asteroid...I read it so long ago and pulled it out recently, read it again, and realized that when i was younger, i missed so much of what was going on! In short, a very good story, sprinkled with true science, and spiced with good characters. Now i have to read the other Heechee books!!!