There is a famous danish sketch called “Jarl Kakadue” from the show “Casper og Mandrilaftalen”. In the sketch, Jarl explains how he completed an iron man, but instead of running a marathon, he got a good nights sleep instead.
“But isn’t that cheating?” to host asks, to which Jarl replies “No, because such a run takes a couple of hours, but a proper nights sleep is at least 8 hours.”

As the sketch goes on, more and more of the exercise gets replaced. The full thing can be seen here: (in danish)

The concept of Extreme Reading is also a modified iron man in the following sense:
instead of swimming, we read a book.
instead of cycling, we summarise the book
and
instead of running a marathon, we run half a marathon (over 3 days)

So each day, we read for a couple of hours, ran 7 kilometers, read some more and then we summarized the book for each other and discussed it.

The book i question was “The origin and nature of life on earth – the emergence of the fourth biosphere” – by Eric Smith and Harold J. Morowitz

Unfortunately, the book is rather wordy and not very mathematical. The individual sections are nicely structured, but the book lacks an main message and sense of direction.

This is puzzling, since Morowitz other books are usually shorter and more precise. However, Morowitz died before the book was published, was very weak the last decade, published little in that period and was in general very short in his formulations, while this book is very long (at times lenghty). It is unclear how much Morowitz contributed to the present book.

This book is 600 pages long and consists of 8 chapters. This is a very hard topic to write a coherent book about and the chapters are quite free-standing contributions to describing or explaining the theory of life.

Eric Smith gave a talk somewhat based on the book, which can be found here: https://www.youtube.com/watch?v=0cwvj0XBKlE

The 4 geospheres are:
Atmosphere (air)
Hydrosphere (water)
Lithosphere (earth)
Biosphere (life)

The point of the title is that life should be though of as a planetary property. However, the point seems more philosophical than scientific, which is the case with many of the subtle points in the book.

A longer summary will be added later.

Overall, the project was a success. We managed to run and read a lot. It is a very satisfying feeling to be both mentally and physically exhausted and we can definitely recommend similar undertakings.