I didn't expect that I'd like this so much, but the twists and turns of the last eighty pages are terrific. Some things Heinlein missed: the internet, cell phones, ATM's, the ubiquity of computers, high price of gold, transistors and calculators. Some things he got right: telephone calling cards and computer aided design. Considering that he wrote the book in 1957 but it's set in 1970 and 2001, he didn't do so bad. But what sets this book apart isn't the technology, which there's a lot of. It's the story, which is really good. ( )

I liked most of Heinlein's older stuff. Once he wrote "The Number of the Beast" he started writing too weird for me. This was one of his better ones. It is the first that I recall with a cat in it (he seems to have a reverence for cats) & an inventor who is a pretty smart guy but can still get himself into a world of trouble - and then back out again. Fun, quick read. ( )

Entertaining and fast moving book. A fun look to what year 2000 seemed when looked from 1950s, some hits, mane mishits. Good prediction that there would be new concepts in language, and some things might might be hard to understand for someone who is transported 30 years to future. Irrittating subplot which might be considered as a bit pedophilic - hard to believe would be proper in a book written present time. ( )

A nerd who builds robots and his cat, a treacherous blonde bombshell a back stabbing business partner, a princess with a heart of gold, cryogenics, time travel, nudists and a happy ending. Quite possibly my favorite novel of all time! ( )

This was a very good book that I encourage others to read and it has a very interesting viewpoint on the study of time travel. ( )