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Thrice Upon a Time
When Murdoch was summoned to his grandfather's isolated Scottish castle, he had no idea of the old man's latest discovery -- nor where it would lead him. Sir Charles, a genius in far-out physics, had found a flew in the law of conservation of energy; in any process, an incredibly tiny increment of energy escaped -- back through time! Using this "tau" radiation, he could send messages into the past.
But Murdoch discovered records of messages he knew he had never sent. Were many futures possible? Could a message from Future X alter the past -- and thus wipe out Future X? But who would be foolish enough to send a message that could eliminate his own existence?
Then disaster struck. An advanced fusion reactor threatened to destroy all Earth. Grimly, Murdoch sat down to send back the words that would destroy everything he had learned to love.
But Murdoch discovered records of messages he knew he had never sent. Were many futures possible? Could a message from Future X alter the past -- and thus wipe out Future X? But who would be foolish enough to send a message that could eliminate his own existence?
Then disaster struck. An advanced fusion reactor threatened to destroy all Earth. Grimly, Murdoch sat down to send back the words that would destroy everything he had learned to love.
Mass Market Paperback
First published February 12, 1980
12 people are currently reading
866 people want to read
About the author
James P. Hogan
114 books268 followersJames Patrick Hogan was a British science fiction author.
Hogan was was raised in the Portobello Road area on the west side of London. After leaving school at the age of sixteen, he worked various odd jobs until, after receiving a scholarship, he began a five-year program at the Royal Aircraft Establishment at Farnborough covering the practical and theoretical sides of electrical, electronic, and mechanical engineering. He first married at the age of twenty, and he has had three other subsequent marriages and fathered six children.
Hogan worked as a design engineer for several companies and eventually moved into sales in the 1960s, travelling around Europe as a sales engineer for Honeywell. In the 1970s he joined the Digital Equipment Corporation's Laboratory Data Processing Group and in 1977 moved to Boston, Massachusetts to run its sales training program. He published his first novel, Inherit the Stars, in the same year to win an office bet. He quit DEC in 1979 and began writing full time, moving to Orlando, Florida, for a year where he met his third wife Jackie. They then moved to Sonora, California.
Hogan's style of science fiction is usually hard science fiction. In his earlier works he conveyed a sense of what science and scientists were about. His philosophical view on how science should be done comes through in many of his novels; theories should be formulated based on empirical research, not the other way around. If a theory does not match the facts, it is theory that should be discarded, not the facts. This is very evident in the Giants series, which begins with the discovery of a 50,000 year-old human body on the Moon. This discovery leads to a series of investigations, and as facts are discovered, theories on how the astronaut's body arrived on the Moon 50,000 years ago are elaborated, discarded, and replaced.
Hogan's fiction also reflects anti-authoritarian social views. Many of his novels have strong anarchist or libertarian themes, often promoting the idea that new technological advances render certain social conventions obsolete. For example, the effectively limitless availability of energy that would result from the development of controlled nuclear fusion would make it unnecessary to limit access to energy resources. In essence, energy would become free. This melding of scientific and social speculation is clearly present in the novel Voyage from Yesteryear (strongly influenced by Eric Frank Russell's famous story "And Then There Were None"), which describes the contact between a high-tech anarchist society on a planet in the Alpha Centauri system, with a starship sent from Earth by a dictatorial government. The story uses many elements of civil disobedience.
James Hogan died unexpectedly from a heart attack at his home in Ireland.
Hogan was was raised in the Portobello Road area on the west side of London. After leaving school at the age of sixteen, he worked various odd jobs until, after receiving a scholarship, he began a five-year program at the Royal Aircraft Establishment at Farnborough covering the practical and theoretical sides of electrical, electronic, and mechanical engineering. He first married at the age of twenty, and he has had three other subsequent marriages and fathered six children.
Hogan worked as a design engineer for several companies and eventually moved into sales in the 1960s, travelling around Europe as a sales engineer for Honeywell. In the 1970s he joined the Digital Equipment Corporation's Laboratory Data Processing Group and in 1977 moved to Boston, Massachusetts to run its sales training program. He published his first novel, Inherit the Stars, in the same year to win an office bet. He quit DEC in 1979 and began writing full time, moving to Orlando, Florida, for a year where he met his third wife Jackie. They then moved to Sonora, California.
Hogan's style of science fiction is usually hard science fiction. In his earlier works he conveyed a sense of what science and scientists were about. His philosophical view on how science should be done comes through in many of his novels; theories should be formulated based on empirical research, not the other way around. If a theory does not match the facts, it is theory that should be discarded, not the facts. This is very evident in the Giants series, which begins with the discovery of a 50,000 year-old human body on the Moon. This discovery leads to a series of investigations, and as facts are discovered, theories on how the astronaut's body arrived on the Moon 50,000 years ago are elaborated, discarded, and replaced.
Hogan's fiction also reflects anti-authoritarian social views. Many of his novels have strong anarchist or libertarian themes, often promoting the idea that new technological advances render certain social conventions obsolete. For example, the effectively limitless availability of energy that would result from the development of controlled nuclear fusion would make it unnecessary to limit access to energy resources. In essence, energy would become free. This melding of scientific and social speculation is clearly present in the novel Voyage from Yesteryear (strongly influenced by Eric Frank Russell's famous story "And Then There Were None"), which describes the contact between a high-tech anarchist society on a planet in the Alpha Centauri system, with a starship sent from Earth by a dictatorial government. The story uses many elements of civil disobedience.
James Hogan died unexpectedly from a heart attack at his home in Ireland.
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Displaying 1 - 30 of 68 reviews
August 19, 2024
Thrice Upon a Time is a stand-alone novel, though you'd think maybe it should be a sequel to his The Two Faces of Tomorrow. It was published in 1980 with a lovely Rowena Morrill cover (check out that futuristic computer!) and opens in 2007 at a Scottish castle of all places. It's a time-travel/alternate worlds novel, the cool gimmick being that it's just information that travels in time. The start is a bit slow, and the scientific discussions tend to get a little deep and wordy, but it becomes a rollicking adventure and a really sweet love-conquers-all romance. Cats rule, as Heinlein taught us. It's not my very favorite Hogan book, but it's close.
May 14, 2019
I thought this was a great book back in the day. It’s a shame Hogan lost his mind to the Brain Eater and became a kook in his latter years.
This book was cool, though, in that it’s about time communication rather than time travel. (Although I’ve put it under that for convenience.) Some guys invent a way to communicate with their past selves, which of course changes the timeline. At first it’s simple things such as “look out for the vase” when one accidentally breaks it, thus preventing them from breaking it. But soon it ramps up, as a nearby particle accelerator accidentally creates miniature black holes which start destroying the Earth. They need to stop it, but they can only communicate with the machine after it is turned on for the first time, and only using a limited amount of characters. And then it gets worse... dun-dun-dun!
I recall this being very tense, and I think it would make for a great movie.
Looking back on it, it was a remarkable piece of prescience. Aside from the laughably limited computers of the far-distant 2010 (30 years after the book was published), Hogan did anticipate quite a lot of the things we take for granted today. He even had self-driving cars. All the controversies about the Large Hadron Collider in 2008, where people were afraid it would destroy the Earth, were almost spot-on.
I suspect that Robert Zemeckis and Bob Gail read this book before writing Back to the Future, because the whole “erased from existence” idea is central to this story, as is the romance angle. There’s a lot going on in this book.
This book was cool, though, in that it’s about time communication rather than time travel. (Although I’ve put it under that for convenience.) Some guys invent a way to communicate with their past selves, which of course changes the timeline. At first it’s simple things such as “look out for the vase” when one accidentally breaks it, thus preventing them from breaking it. But soon it ramps up, as a nearby particle accelerator accidentally creates miniature black holes which start destroying the Earth. They need to stop it, but they can only communicate with the machine after it is turned on for the first time, and only using a limited amount of characters. And then it gets worse... dun-dun-dun!
I recall this being very tense, and I think it would make for a great movie.
Looking back on it, it was a remarkable piece of prescience. Aside from the laughably limited computers of the far-distant 2010 (30 years after the book was published), Hogan did anticipate quite a lot of the things we take for granted today. He even had self-driving cars. All the controversies about the Large Hadron Collider in 2008, where people were afraid it would destroy the Earth, were almost spot-on.
I suspect that Robert Zemeckis and Bob Gail read this book before writing Back to the Future, because the whole “erased from existence” idea is central to this story, as is the romance angle. There’s a lot going on in this book.
August 23, 2023
Take your damn 5 stars and get outta here!
This book is, at once, a cozy, comfortable, thrilling, highly technical, existentially dreadful, hopeful, mind-boggling, barely romantic feel-good book.
How does it accomplish all of this?
By having a cast of great characters, good pacing, phenomenal writing, a very bittersweet moment, and a very satisfying conclusion to it all.
And that’s on top of being subject to very hard science. Like, super hard. With lots of details.
You can tell how based on real life science this is, because when you look back towards how it all started, you see exactly who’s fault it is…
And it’s all the cat’s fault!
Cat doing cat things. This is science.
This book is, at once, a cozy, comfortable, thrilling, highly technical, existentially dreadful, hopeful, mind-boggling, barely romantic feel-good book.
How does it accomplish all of this?
By having a cast of great characters, good pacing, phenomenal writing, a very bittersweet moment, and a very satisfying conclusion to it all.
And that’s on top of being subject to very hard science. Like, super hard. With lots of details.
You can tell how based on real life science this is, because when you look back towards how it all started, you see exactly who’s fault it is…
And it’s all the cat’s fault!
Cat doing cat things. This is science.
May 5, 2019
Close to a perfect time travel story (if you disregard the small detail that no one actually travels in time)
Hogan must be the most overlooked sci-fi writer ever, this is the second book I have read by him (Proteus operation being the first) and they are both small gems. (I am aware that he developed some strange and rather unpleasant viewpoints in his old days, but I try to disregard that)
A time-travel/time paradox story that takes the premise seriously, written in 1980 ,the story is set in the far future of our current time, a future that reflects the (optimistic rational , technology solves everything) view of the early Clarke novels, which adds to the old classic feeling of the novel.
The story is easygoing, cleverly constructed and are something as uncommon as a love story in a very hard core sci fi wrapping.
Hogan must be the most overlooked sci-fi writer ever, this is the second book I have read by him (Proteus operation being the first) and they are both small gems. (I am aware that he developed some strange and rather unpleasant viewpoints in his old days, but I try to disregard that)
A time-travel/time paradox story that takes the premise seriously, written in 1980 ,the story is set in the far future of our current time, a future that reflects the (optimistic rational , technology solves everything) view of the early Clarke novels, which adds to the old classic feeling of the novel.
The story is easygoing, cleverly constructed and are something as uncommon as a love story in a very hard core sci fi wrapping.
October 19, 2009
Wow. I THINK there was a story there. Sometimes I couldn't tell because of all the technical jargon and overly detailed explanations. OK, you are trying to sell me on sending information through time. I've kind of already suspended my belief in order to read the book. You don't have to keep selling me on the idea. I'm there, I'm reading. Let's just get to the actual story! Waaaaayyyyy to wordy, not enough enjoyment.
June 11, 2011
Very interesting idea of how multiple universes might work, but the story seemed a little contrived. Hogan seems to have written a theory wrapped in an uninspired story rather than telling a good story and working the theory into the storyline.
March 1, 2020
This novel deals with time travel, but only of information. Mostly hard science, it also has a decent plot, good characters, and some humor. Though the author's vision of 2009 is a bit off (and check that cover computer!), it was still an enjoyable read - and a good fit for Leap Day.
I liked the characters; both male and female were different and solid. The mystery aspects of the plot were well done, though that takes a while to get rolling. The subsequent mystery felt tacked on, but the pandemic aspects ended up a good fit - and relevant today.
The author makes his case for information passing through time, though in a bit too much detail and for a few too many pages. The plot allows for it - characters explain to scientists, doctors, then government officials - but an infodump is still an infodump. Other aspects are left as just a mention - autonomous vehicles and vertical hop planes.
I would recommend this book. I believe I read one other James P Hogan book as a kid; will find out when I read it in the next few years.
I liked the characters; both male and female were different and solid. The mystery aspects of the plot were well done, though that takes a while to get rolling. The subsequent mystery felt tacked on, but the pandemic aspects ended up a good fit - and relevant today.
The author makes his case for information passing through time, though in a bit too much detail and for a few too many pages. The plot allows for it - characters explain to scientists, doctors, then government officials - but an infodump is still an infodump. Other aspects are left as just a mention - autonomous vehicles and vertical hop planes.
I would recommend this book. I believe I read one other James P Hogan book as a kid; will find out when I read it in the next few years.
July 5, 2014
I started reading this book when it came out (1980). I stopped reading at what i thought was about 1/3 though...I never forgot not finishing the book and the title popped into my head every couple of years (or more). It haunted me so much that I decided to attempt it again in June of 2014. I only took a few chapters of analytical supposition to understand why I quit reading the 1st time...I decided to 'speed read' through the book. It probably contains some interesting theories....I read enough for me to conclude that time travel is not possible, anyway....Anyway,.....I did reach the end this time (sort of) and while I am happy to have reached the conclusion and, hopefully, will quit being haunted by it ( not that I'll ever forget it NOW), it's not a book that I would ever recommend... Sorry
December 12, 2020
I just finished re-reading this book for the first time in 30 years. (Showing my age again.) I am glad I did.
Jim Hogan never disappoints. Written in 1980; set in 2009 - he did a reasonable job of 'predicting' what our world would be like, with a few noticeable exceptions (like the USSR still existed; no cell phones; suborbital commercial rocket flights were commonplace; etc.) BUT that does not matter. THE STORY HOLDS UP WELL, engages the reader, makes you care for the characters (including love, love lost, and maybe, love regained), and teases your brain.
I met Jim several years ago, saw him fairly often at science fiction conventions here and there, and corresponded with him - eventually consulting on some of his books. My life is richer because of his literary work and for having known him.
I recommend this book. It is one of his best.
Jim Hogan never disappoints. Written in 1980; set in 2009 - he did a reasonable job of 'predicting' what our world would be like, with a few noticeable exceptions (like the USSR still existed; no cell phones; suborbital commercial rocket flights were commonplace; etc.) BUT that does not matter. THE STORY HOLDS UP WELL, engages the reader, makes you care for the characters (including love, love lost, and maybe, love regained), and teases your brain.
I met Jim several years ago, saw him fairly often at science fiction conventions here and there, and corresponded with him - eventually consulting on some of his books. My life is richer because of his literary work and for having known him.
I recommend this book. It is one of his best.
July 29, 2007
One of James P Hogan's best. Paradoxes mount up as the invention of a time communication device is eventually used (twice) to save the world. Mind bender at times. Hard science fiction at it's best (with the exception of Heinlein, Asimov, and Niven - good company to be with)
April 11, 2023
For Asuka.
December 17, 2025
yeah whatever
July 22, 2014
There are two kinds of time travel works of fiction. The one were the time travel just happens and the other one were the author takes you through every step of the science and the possible paradoxes involved. This book is of the later category. The author really understands physics and logic and knows how to present them in an interesting fashion.
This is not really a fiction story in as much as the author doesn't create the drama through the developing of characters and situations but he builds the story by describing all the steps (at least from a 30000 foot view) necessary in thinking about time travel from the physics and logical implications perspective.
Another really interesting twist from this novel is it was written in 1980 but takes place around our current time period. The author knows physics, logic and tells a fun story which will make you learn something you didn't already know, and does not suffer what so ever because it's 30 years old. After having read this book, you will be able to defend a possibly logically consistent framework for time travel.
P.S. I had read this 30 years ago when it first came out and I had remembered absolutely loving it. I realize now why. It deals with the science and logic much more than the characterization and drama than most fiction does. The book lays out a logically consistent approach through a many world interruption of quantum physics before it became fashionable. The book was really ahead of it's time and I'm really glad Audible has made this book available.
This is not really a fiction story in as much as the author doesn't create the drama through the developing of characters and situations but he builds the story by describing all the steps (at least from a 30000 foot view) necessary in thinking about time travel from the physics and logical implications perspective.
Another really interesting twist from this novel is it was written in 1980 but takes place around our current time period. The author knows physics, logic and tells a fun story which will make you learn something you didn't already know, and does not suffer what so ever because it's 30 years old. After having read this book, you will be able to defend a possibly logically consistent framework for time travel.
P.S. I had read this 30 years ago when it first came out and I had remembered absolutely loving it. I realize now why. It deals with the science and logic much more than the characterization and drama than most fiction does. The book lays out a logically consistent approach through a many world interruption of quantum physics before it became fashionable. The book was really ahead of it's time and I'm really glad Audible has made this book available.
April 8, 2015
Thrice Upon a Time (1980) 310 pages by James P. Hogan
This novel started out with a lot of theoretical discussion between the protagonists, with a lot of "I knew this guy from when I worked at..." The first discussion was about sending messages back in time, and how would that affect reality. How does it avoid a paradox? What happens to the world when a message is sent back to a time where they hadn't previously received that message?
Murdoch and Lee are Americans, who are coming to work is Scotland with Murdoch's grandfather, Charles Ross, and Ted Cartland who are pioneering this technology. One of Charles' former colleagues is Elizabeth Muir who heads the nearby fusion plant which is just about to start production.
The fusion plant spawns another round of theoretical discussion.
There is a side story of a romance between Murdoch and Anne, going on during the first half of the book. Then there is a problem, how can I say this without it being a spoiler?, which causes them to utilize the capability of the message back in time device.
The technical discussion of the fusion plant operation may have been fascinating for some, but I suggest you skim through that section. It's the interaction of the people not the number of beams of atoms that come together in the fusion process that is integral to the story.
The book was a quick read, interesting, and really held together very well. A very good stand alone novel. I really enjoyed it.
This novel started out with a lot of theoretical discussion between the protagonists, with a lot of "I knew this guy from when I worked at..." The first discussion was about sending messages back in time, and how would that affect reality. How does it avoid a paradox? What happens to the world when a message is sent back to a time where they hadn't previously received that message?
Murdoch and Lee are Americans, who are coming to work is Scotland with Murdoch's grandfather, Charles Ross, and Ted Cartland who are pioneering this technology. One of Charles' former colleagues is Elizabeth Muir who heads the nearby fusion plant which is just about to start production.
The fusion plant spawns another round of theoretical discussion.
There is a side story of a romance between Murdoch and Anne, going on during the first half of the book. Then there is a problem, how can I say this without it being a spoiler?, which causes them to utilize the capability of the message back in time device.
The technical discussion of the fusion plant operation may have been fascinating for some, but I suggest you skim through that section. It's the interaction of the people not the number of beams of atoms that come together in the fusion process that is integral to the story.
The book was a quick read, interesting, and really held together very well. A very good stand alone novel. I really enjoyed it.
July 20, 2018
Some really interesting concepts, and when the plot is moving, it's great. Unfortunately, a lot of the book is just sitting around talking. But if you get past the beginning, you'll be good to go.
August 18, 2018
As others have said, when the story is moving it is a pretty good plot revolving around time communications. But it too much explanation drag the story down in several places.
March 22, 2020
This book has an intriguing premise. Scientists discover a method of sending messages through time. Over the course of the book they work to understand the phenomenon and work out a theory which explains it, then confirm their theory. Then, when a global catastrophe looms, they use their new found abilities to save the world.
Which makes for a great story, except that it doesn't end there. Once disaster is averted, another disaster crops up ... which has to be averted using the time messaging machine. The second disaster and its solution felt somewhat tacked on to me. While it didn't quite come from nowhere (there were hints of it in the first part of the novel) the problem and its solution seemed a little too contrived. One global disaster occurring when they had invented their machine just in time to avert it I could believe, but not two.
Overall, a clever look at an interesting idea, let down by its ending.
Which makes for a great story, except that it doesn't end there. Once disaster is averted, another disaster crops up ... which has to be averted using the time messaging machine. The second disaster and its solution felt somewhat tacked on to me. While it didn't quite come from nowhere (there were hints of it in the first part of the novel) the problem and its solution seemed a little too contrived. One global disaster occurring when they had invented their machine just in time to avert it I could believe, but not two.
Overall, a clever look at an interesting idea, let down by its ending.
December 14, 2024
Wow! This was so my cup of tea! [Can I say it like this? :)] This is the kind of time travel, time loop, and time paradox book I’m always on the lookout for. I enjoyed it so much! There were only a couple of moments that felt a bit cliché, but honestly, the whole premise and the way James Hogan builds up the story more than made up for them.
It’s definitely "hard science fiction," so I can’t claim I understood every detail, but grappling with all those complexities was incredibly enjoyable for me—this is exactly what I want and need from believable sci-fi. Oh, and I had to check again when it was written, because it even included an epidemic scenario! It makes me wonder why this didn’t gain more recognition during Covid, at least. I truly believe it deserves more attention.
Also, this could easily be turned into a movie, why hasn't it already been? At times, it even felt as if James P. Hogan had a movie script in mind rather than a book :)
It’s definitely "hard science fiction," so I can’t claim I understood every detail, but grappling with all those complexities was incredibly enjoyable for me—this is exactly what I want and need from believable sci-fi. Oh, and I had to check again when it was written, because it even included an epidemic scenario! It makes me wonder why this didn’t gain more recognition during Covid, at least. I truly believe it deserves more attention.
Also, this could easily be turned into a movie, why hasn't it already been? At times, it even felt as if James P. Hogan had a movie script in mind rather than a book :)
May 11, 2025
It's almost entirely filled with slow, clinical explanatation of time travel and its ethics, which was fun for a while, but it felt like the story never left the realm of theory and into practice at all. Essentially, the story is about a group ofnpeople having a time machine, and deciding what to do with it. However, there's nothing after that. Problems are solved without struggle or consequence, something most time travel stories solely rely on. Characters do ask questions about the morals about time travel, and they will just explain away. All in all, it's not a thrilling, emotional, or touching story, but rather about some ideas about whether or not we should change the past, and the answer is pretty much yes all the time.
April 2, 2021
My third Hogan.... I really liked Code of the Lifemaker, didn't like another one of his called the Cradle of Saturn. Didn't know how this would be.
I was pleasantly surprised. Some of the best quantum mechanics I've read. Great ideas on paradoxes, alternate universes, and more. The characters were... well... it read like an Arthur C Clarke book. I'm a fan of ACC, but he's not known as a great writer of characters. The plot was decent, but ended to abruptly. There was also this weird loop thrown in there at the end that I didn't love. Maybe it should've been foreshadowed more, but... that's okay.
I was just complaining about it, but in the end it was a pretty enjoyable read.
I was pleasantly surprised. Some of the best quantum mechanics I've read. Great ideas on paradoxes, alternate universes, and more. The characters were... well... it read like an Arthur C Clarke book. I'm a fan of ACC, but he's not known as a great writer of characters. The plot was decent, but ended to abruptly. There was also this weird loop thrown in there at the end that I didn't love. Maybe it should've been foreshadowed more, but... that's okay.
I was just complaining about it, but in the end it was a pretty enjoyable read.
February 5, 2024
When you think of time travel, you usually don't think of the transmission of information or energy through time. This book builds a fun story on the premise of how information could be sent back or ahead in time. The characters are well developed, the tech, as far as I can tell, seems believable given a premise or two. The author also invents a hyperloop transportation system -- note that the book was published in 1980. I have read this 6 times since 1980, and have loved reading it every time; no information was transmitted forward or back to influence this decision, that I know of.
September 5, 2025
Uggh. Couldn't finish it. This would have been a good short story but instead Hogan subjects us to 300 pages of pedantic lectures with very little "story" to smooth things along. Plus the overuse of descriptors (if you can describe a house or bank of equipment using one paragraph, why not use ten?!) had me skimming page after page. Those with an intellectual interest in the paradoxes associated with time travel might enjoy the arguments he sets forth but I found the whole thing meandering and dry as dust. Maybe it got better eventually? I guess I'll never know.
October 15, 2025
Takes a solid dose of sexist before it even hits a plot
Hogan was born in the 40s and it shows, in very unattractive ways. There’s unlimited energy, near orbital shuttles that can do NYC to Glasgow on an hour but the only women are housekeepers or are cheerful demeaned as ‘not bad looking for their age’ despite (presumably) multiple PhDs.
The cat (who is also male) gets better billing than anything with a uterus. I’d leave Hogan’s works where they belong, in the trash heap of history
Hogan was born in the 40s and it shows, in very unattractive ways. There’s unlimited energy, near orbital shuttles that can do NYC to Glasgow on an hour but the only women are housekeepers or are cheerful demeaned as ‘not bad looking for their age’ despite (presumably) multiple PhDs.
The cat (who is also male) gets better billing than anything with a uterus. I’d leave Hogan’s works where they belong, in the trash heap of history
May 3, 2021
On the cover, it says "An Exciting New Novel By James P. Hogan"
That is a bald-faced LIE.
For the first half+ of this book, almost nothing exciting happens, and I think he lifted large chunks of text from several science books.
Despite being on the cover, Maxwell was totally underused in this book.
That is a bald-faced LIE.
For the first half+ of this book, almost nothing exciting happens, and I think he lifted large chunks of text from several science books.
Despite being on the cover, Maxwell was totally underused in this book.
June 25, 2020
Murdoch Ross is delighted when his brilliant grandfather invents a machine capable of sending messages to itself through time to the past or future, but soon messages begin to arrive that the machine did not send, including one warning of the imminent destruction of the world.
May 17, 2017
i really enjoyed this. Cleverly dodges the whole 'paradox' idea by putting the whole concept on the shelf. But very touching love story and great characters.
November 13, 2017
I don't normally like time-paradox stories; they just rub me the wrong way. But the science in this one seemed to work!
July 8, 2019
Very slow start but got interesting about 1/3 of the way in. It was interesting to see the author predicted the future ipad.
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September 21, 2021Really outstanding! Hogan really understands engineering, and presents a plausible method of dealing with time travel paradox. Highly recommended.
Displaying 1 - 30 of 68 reviews