No es lo que esperaba. Este libro no era para mí.En realidad 2,4Este es el libro sobre viajes en el tiempo más aburrido que he leído en mi vida. Puerta al verano es una obra sin acción ni intriga y está escrita en un lenguaje similar al que encontramos en un manual técnico de un dispositivo electrónico. ¡Qué pereza de historia!La sinopsis es clara y directa. Puerta al verano cuenta la historia de un ingeniero llamado Dan Davis quien realiza un invento innovador que ayudaría a eliminar el problem...

Ale to była dobra książka. I zabawna. I przyjemna. I w ogóle super.

Oho, konstrukcja zdań prawie jak w "Czwartym Skrzydle".

Staczam się.

He disfrutado mucho releyendo este libro. No es ni el mejor ni el más representativo de su obra, pero sí un referente del tópico de viajes en el tiempo. No es comparable a Estrella doble o Tropas del espacio, pero entretiene y hasta te saca unas risas.Me ha gustado la forma en que Heinlein explica los diversos procesos, sin entrar en demasiados tecnicismos, acorde con el tipo de novela que es. Fascinante el tipo de futuro que imaginó para el año 2000. Me gustaría que hubiese acertado. Los person...

Well, that was lame...and weird. I would have given this a 3, but that ending was hella strange. Honestly, I couldn’t get into this book and was mostly bored the whole time. Davis takes the “long sleep” in 1970, wakes up 30 years later, and nothing exciting comes of it other than needing to get a job and figure out what happened to his inventions and stocks. There is barely any discussion of the changes that occurred over the 30 year period. There is mention of a large amount of new jargon, but ...

Ad hoc Heinlein Read May 2025Necessitated by increasing stress levels with the continuing House move, and still a wonderful 4 star read.A very enjoyable read after so many years away from him, and a real mixture of time travel and cryogenesis. You have to read it ! Ad hoc Read February 2017Well after many thousands of ratings this book is averaging 4 stars so my rating will make no difference at all. I first read this back in the late 70s, and like most of Heinlein's early and middle work I rea...

I'm a little surprised I don't seem to have posted a review of this one before. I read this book "way back when". I probably read it first when I was in high school or just after. That would probably be the 1960s. I went through a period when I discovered Heinlein and ran through everything I could get my hands on by him. Some I didn't care for, some I liked and some I loved.Many people place this in his so called "teen reads" but there is some question about that due to some of the subject matt...

I didn't read this book with the intention of writing a review, so you'll excuse me if I don't go into great detail. Let me just summarize "the feel" of the book...It is not very often that I read a book that makes me smile the entire time I'm reading it; this is one of them. From the hilarious anachronisms of the 1950's Futurist to the brilliant side-kick cat, Pete. (Cat lovers will appreciate this book on a completely different level than other readers). I was laughing out loud at least once e...

An enjoyable SF story from a Grandmaster.The novel's protagonist, Daniel B. Davis, was a precursor to Hugh Farnham and even Lazarus Long somewhat, though Long was introduced earlier in 1941's Methusaleh's Children. Actually, Davis (and others) are thinly disguised Heinlein: fiercely individualist, libertarian, technically savvy, hard working yet innovative, resourceful, wise cracking, and with a horn dog libido that would make a porn star blush. I wonder if Door Into Summer used some of the same...

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...

Ultimately creepy, and not in a good way. It's a time travel tale, and I'll forgive a lot for an entertaining time travel story. But "entertaining" and "time travel" are all it's got going for it. I haven't read a lot of Heinlein, but this didn't show me at all why he's got got so many fans. The writing style is fine, but he goes wrong in a few key ways with the story. [SPOILERS] For one, he wrote the book in 1956, with most characters' natural time being 1970 and the rest of the action (reached...