In this book Nick Carr takes the reader through history by exploring the similarities between electrical power generation and computing. Through an uncritical and historical metaphor it imposes his ideas of how the computing industry will change and improve exactly as the power generation did more than a century ago. Carr started this argument in a previous book "Does IT Matter" published in 2003, where he controversially asserts that, at business level IT is so widespread and advanced that companies cannot compete anymore with each other, as they all have the same IT capacity.
The Big Switch is a very well written and interesting book. It is divided into two main parts. In the first part, Carr gives an historical analysis on the development of the electric power generation, from the in house production to the construction of power stations and the provision of electricity as a service. After providing the reader with this background knowledge; in the second part, through another historical analysis, but this time of the IT industry, he shows how the IT is evolving in such a similar way as the power generation. Arriving to the conclusion that IT will be soon provided only as a service, just like electricity.
Carr bases his thesis on the fact that during the industrial revolution of the 20th century, most of the factories had in house power generation systems and it did matter if you had a bigger generator than your competitors. Production was highly affected by the capability of the factories to produce their own electric power. Therefore, having better and more powerful electrical generators would have given you an advantage against competitors. At this time, early power plants arrived bringing with them cheaper and more efficient electricity for everyone; giving the opportunity to all those who wanted to open a factory, but could not afford a power generator. Accordingly, when IT started to spread across businesses and companies it mattered about having a faster and more reliable system than your competitors. Many of the big firms of the past failed to keep up with the time just because their IT infrastructures were not as organised and efficient as the ones of their competitors. Nowadays, however, we have reached a point of stability and IT does not make anymore the difference. All the big companies are using the same technologies. Obviously there are different systems around, but still the gap between big companies has been levelled out and we are now in a time where a new change will come soon. Just like the way it happened with the power generation.
Right, Carr's thesis does make sense, so far. Especially, if written in the way that he does in this book. There are not many technology journalist and writers as talented as him out there. However, throughout the book there are many incongruences that are not analysed or even taken into account. He does not take in consideration any other alternative. This gives the reader the only option to believe that what he is saying is right without even arguing it. It has to be said that many of his arguments are undoubtedly true thus his predictions of the future are probably correct. Yet, many of them are wrong, too.
First of all, the metaphor between power generation and computing is misleading and at times erroneous. If looked at in more detail, this analogy does not match as precisely as the author depicts it. Perhaps, if we consider that IT can be provided in three different ways, then a more suitable analogy would be the music industry evolution. At first, music was only available through concerts and live shows at specific times and places, just like early mainframes. Then the phonograph changed everything and music became playable anytime and anywhere we wanted, just like personal computers. Finally, with the invention of the radio, music became a service, just like web applications (or cloud computing). As far as we are all concerned, today music can still be delivered in any of those three formats and very likely this will happen with computing. In other words, we will carry on having people developing their own applications, using local applications and using software as a service.
Carr states that centralised power generation is much more efficient than in house power generation. This unfortunately is not entirely true, centralised production of electricity is just cheaper and cleaner. Carr maybe didn't consider that about 50% of the energy produced in all the power stations around the world is lost on the network, before it even gets to our homes and in the event of a blackout we are left with none at all. What if, as Carr predicts, we transfer all our knowledge and information into the cloud and one day there is a fault in the cloud? The consequences are probably unimaginable. It is obvious that the cloud is the direction that we have to point to, but discarding any other option is almost certainly a hazard.
Another uncritical assertion given by Carr is that of examples of successful companies that have used the cloud to support their business models. What about the other companies? Do we all need to go into the cloud to be successful? What disadvantages are there to relying on the cloud?
Also, throughout the entire book Carr tries to coin the new term "world wide computer" this is superfluous and unnecessary. Although, the Internet is changing there is no need to define with a new term what we already know.
Concluding, The Big Switch is a highly recommended book to everybody interested in technology. The first part is a fascinating read about how it all started including in a story like format the beginning of the electricity era. In the second part, however a good level of scepticism and critical thinking will help create a better image of what has happened, what's happening and what will happen to IT in the very near future.