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What Members Thought

Algernon (Darth Anyan)
Aug 02, 2011 rated it liked it
Shelves: 2011
I liked it, but it was suggested to me I shouldn't give four stars to every single book I enjoy, so here it goes for Heinlein. I really had no issues with "The Door Into Summer", and Heinlein is still one of my favorite SF masters after this.

I enjoy books that feature engineers as protagonists, and here we have one proto-geek singlehandedly inventing robotics in the 50's and failing rather spectacularly in the human relations department. Later on, there's some time travel thrown in and some cryo
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Sue
Jun 14, 2025 rated it it was amazing
Loved this book. There's a dual timeline 1970 and 2000. Both are in the far future for the actual author, the book was first published in 1957.

Dan Davis is an engineer living in 1970. He successfully designed and commercialized a self-vacuuming device that turned into a "must have" in every home. The description sounds exactly like a roomba - and while that wasn't available in 1970, the author was pretty accurate in where the technology was heading.

Dan's a bachelor with a small social circle -
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Gillian Wiseman
Aug 23, 2022 rated it it was amazing
Shelves: science-fiction
Firstly, I love Heinlein. I know he can be viewed as problematic, but I grew up reading him in the late 70's and 80's and I will never stop enjoying him.

This story is just fun. The main character and Pete are people I admire. Of course it's corny and a bit predictable in a twisty way, but it is good fun, explores interesting concepts, and is comforting. Don't pass it up if you like older SF, or if you never read the classics of SF. It's one of Heinlein's less talked-about novels, but it's GOOD.
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AsimovsZeroth
Dec 02, 2010 rated it it was amazing
Shelves: heinlein
Sabrina
Jul 12, 2012 marked it as to-read
scherzo♫
Apr 22, 2013 rated it really liked it
Shelves: wonderworks
Robin P
Jun 14, 2014 rated it really liked it
L.S. Popovich
Dec 22, 2015 rated it really liked it
Kate
Jan 07, 2016 rated it liked it  ·  review of another edition
Arielle Vanessa
Jun 02, 2017 marked it as to-read
Jenni
Jan 31, 2019 marked it as to-read
David Putnam
Dec 26, 2019 marked it as to-read
Melissa Miles
Feb 16, 2022 marked it as to-read
Jen K
Jan 04, 2023 marked it as to-read
Kat
Nov 09, 2023 marked it as to-read  ·  review of another edition
Soren
Aug 06, 2024 rated it liked it  ·  review of another edition
Shelves: sf-masterworks