Not for the novice! While I was able to follow the broad points, the descriptive mathematics that comprise the majority of the work was well out of my league. Math textbook, here I come...

I thoroughly enjoyed this book. To say that parts of it were difficult would be to grosely understate the reality of reading something like this. It is really something to be able view a piece of dialogue between two minds of this caliber debating the nature of space and time and the implications to the beginning of the universe. You can’t not rate something like this 5 stars.

Yet another Great book by Stephen Hawking!

very, very dense

really interesting, highly recommended

Way to much brain power needed to be a recreational read. Interesting and technical in spots.

In this series of lectures, Stephen Hawking and Roger Penrose take turns giving their views on the fundamental nature of the universe, delving into various ways to reconcile general relativity and quantum mechanics, and touching on various topics such as singularities, Schrödinger’s cat, black hole information loss, quantum entanglement, and the Big Bang. Since much of the discussion is based on advanced/specialized mathematics it’s not easy to read, but I found there enough commentary to form some kind of gist. It is astonishing how mathematical the universe appears to be, but whether mathematics is fundamental or just a really good tool is the question. The ongoing arguments between Hawking and Penrose do much to hold the reader’s interest, and while this book may not be the best introduction, it does provide ample possibilities for future exploration.

En definitiva un libro recomendable para los curiosos de la física. No es sencilla su lectura y requiere conocimientos previos de algunos de los argumentos

Si este libro pretende ser divulgación científica ligera, fracasó rotundamente, pero el 10% que entendí me pareció fantástico.

Tecnicamente impegnativo

https://www.youtube.com/watch?v=-fC2o...

The book is very pleasing because it has a good balance between technical and divulgative paragraphs. Obviously it is aimed at theoretical physicists, but some passages are worth reading also for scientists that do not work in this particular field.

I really appreciated it!