I'm a big fan of Doctorow's work. This one was alright, although too many characters, some of who were necessary, but as they are spread out across the world, there were too many minor support characters. This story lacked some of the future-desperation I expect in his stories. Ending was a bit too abrupt.

Excellent read. Engaging main character and good support characters, believable tech. Docotrow's writing engages the reader and urges you to keep on reading. This is not science fiction, though.

Thoroughly enjoyable read. The technology, naturally, is a little dated, but the characterizations and plot make that easy to overlook.
I'm surprised that with today's CGI abilities, no one has made this into a movie yet.

1962 pulp SF, so some of the 'science' is a little dated, but good characters and plot - if your ADD doesn't let you drift away.