Not all aspects of brain evolution are covered. The model describes the way information stored in the network of logically identical nodes is used to make decisions. It is not directly concerned with the physical form of the nodes. However it is often useful to consider, for example, how the brain is physically constructed and that neurons occur in brains which have a limited life time. Because significant research has been published on how neural networks can learn to recognise patterns the paper does not consider alternative algorithms for such trial and error learning, but simply assumes that in evolutionary terms it is an expensive process. Instead the paper concentrates on the ways language is used by humans to construct a more effective, and significantly more efficient, decision making network based on the same basic structure used in animal brains.
The reassessment of the CODIL project started when my son pointed out that when I pass on the contents of the garage would probably go into a skip - and I decided to reassess the project to see if there was anything worth saving.
It would seem that the project failed because in the 1960s and 70s everyone was so busy climbing onto the stored program computer bandwagon that promoting a possible alternative information processing model was doomed to failure. However some 50 years later it is now obvious that the human brain works in a very different way to a conventional computer and the project could be worth starting up again
I will be completing the draft of the above paper - and continue to post more detailed topics on the blog. If you have any comments or questions I am always receptive - see Science is about asking the right questions? I am also looking to see if any of the project records should be archived and have prepared summaries The SMBP Story (1965-1967) and The EELM/ICL Story (1967-1990) for the LEO Computer Society Archives at the Cambridge Museum for Computing History, and because the CODIL project was originally supported by the LEO pioneers David Caminer and John Pinkerton, it may be appropriate for some of the later records to go in the same direction.
If anyone is interested in following up the ideas I will be delighted to hear from you, either because you are interested in research into the evolution of human intelligence, or because you are interested in the history of computers and the reasons why this project was originally abandoned.