Los científicos vienen afirmando desde hace ya varias décadas que la ciencia del siglo XXI será la de los sistemas complejos.

Entertaining journalism but not reliable. For example, he is wrong about Langton's parents. Sometimes it seems like he is just making it up. ( )

Great scientific, mathematical, and philosophical journey of chaos, order, and complexity! ( )

Interesting. Half-way through it at the moment, and have felt the need to post a review at the end, but I know how often that thought isn't followed up. So, here's an interim to be going on with ...

Lots of flag-waving of Complexity as the next big thing, but yet all these years on and it's not attained any recognition to my mind. I recognise a lot of the names that are popping up, but the two or three who form the backbone of the book aren't among them. (I've yet to check the references at the back of my personal collection of books that would have been impacted by the ideas here.) I think the reason is that ideas are either just wrong, or haven't been attacked by a statistical mathematician. Computer programs that throw up results that 'look like a power law' probably do have a best-fit rule, but I'm betting it isn't something so simplistic as a power law. Another thing that grates is the consideration of the Cambrian explosion: first there was uni-cellular life, then multi-cellular life, and then a profusion and a winnowing as larger-scale body-plans proliferated ... and then a long time after came the Cambrian explosion which is only recognisable because of the development of bony structures. The main person that Lewin tracks seems to have made the same mistake as Stephen J. Gould in thinking that the Cambrian explosion is special, whereas it's more likely just a point in the decline of the variety of body plans after an earlier burgeoning which would have been the really interesting stage at which to point a complexity analysis. Simon Conway Morris is mentioned in passing, but doesn't exist in the index - perhaps if his work had been studied a bit more closely then the path to complexity might have been clearer. I'm just at the bit where Gaia is becoming the focus, and I'll be interested to see if the ideas that Dawkins explores in 'The Extended Phenotype' are recognised.

I know I have the advantage of hindsight, but this is really looking like a dead-end (at least in the exploration of biology/evolution) although the field of 'complex systems' does seem to have a life still. Let's see if I have a better opinion when I complete the remaining half of the book.

* * * * *

Finished. I did review my library to see if there was any resonance of these ideas: well, they were mentioned in passing and there was a chapter on it in Concilience, but on the whole they were dismissed as having a wider impact. I found the last chapter interesting because Lewin summed up the investigations he had taken in putting this book together, and came to a conclusion that seemed judicious. My thoughts chimed more with those of Will Provine, also represented in the last chapter, who seemed to see the consideration of the force of Complexity within biology as just wishful thinking (my words). ( )

A fairly early book on complexity sciences, shown mostly through conversations between the author and complexity science researchers in a variety of fields. As someone on the verge of getting her PhD in Complexity Sciences in 2012, I found it interesting to see what people in the 1990s thought about the field. I particularly enjoyed reading about the work on patterns of social complexity, which is not an area I know much about. The chapter on consciousness surprised me... I don't know that many complexity scientists are still trying to explain consciousness as an emergent property, but it sort of makes sense to me.

Things I did not enjoy:
- the repetitive nature of some of the interviews, especially the really heavy-handed pointing out of connections to early discussion.
- the over-explaining of concepts of mathematics and computer science. I suppose general computer literacy was probably lower in the 90s, but even so this felt a little patronising in places.
- some of the weird asides that didn't have much to do with the theme, e.g. the time he had hayfever, the conversation about some hiker going missing in Dartmoor, and a really weird comment about "urban Jews".

If you want to read about complexity science, there are some much better (and more recent) books out there, e.g. Deep Simplicity by John Gribbin and Sync by Steven Strogatz. ( )